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The Latin noun annus (year) stands at the very heart of how the Catholic Church measures and sanctifies time. From the famous dating system Anno Domini (”in the year of the Lord”) to the annus litúrgicus (liturgical year) that structures all Catholic worship, this word pervades ecclesiastical texts, papal documents, and sacred scripture.
Annus is a second declension masculine noun, following the regular paradigm of words like dominus and fīlius. Its forms appear constantly throughout the Vulgate Bible, the writings of the Church Fathers, liturgical calendars, and official Vatican documents. The Venerable Bede’s Ecclesiastical History of the English People (731 AD) popularized the Anno Domini dating system, which the monk Dionysius Exiguus had devised in 525 AD to calculate Easter dates while numbering years from Christ’s Incarnation.
In the Church’s understanding, the year is not merely a calendrical unit but a sacred cycle through which the faithful relive the mysteries of Christ’s life, death, and resurrection. The annus iubilǽus (Jubilee Year), proclaimed periodically by the Pope, offers special graces and indulgences to pilgrims—2025 being the current Holy Year under Pope Francis.
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FAQ: What does annus mean in Ecclesiastical Latin?
Annus is the Latin word for “year.” In Catholic contexts, it appears in phrases like Anno Domini (”in the year of the Lord”), annus litúrgicus (”liturgical year”), and annus iubilǽus (”Jubilee Year”). It is a second declension masculine noun declined: annus, annī, annō, annum, annō (singular) and annī, annōrum, annīs, annōs, annīs (plural).
Educational Note: This material is designed for autodidactic language learners following the Latinum Institute interlinear method, which makes the full resources of the Latin language accessible through word-by-word glossing.
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Annus is a 2nd declension masculine noun meaning “year” -
The ablative singular annō appears in the famous phrase Anno Domini -
Duration of time uses the accusative case: per tōtum annum (throughout the whole year) -
Point in time uses the ablative case: hōc annō (this year) -
The liturgical year cycles through Advent, Christmas, Lent, Easter, and Ordinary Time -
Derived words include annuus (annual), anniversārius (anniversary), and annuātim (yearly)
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1.1a Annus year novus new venit comes
1.1b Annus (/ˈan.nus/) year novus (/ˈno.vus/) new venit (/ˈve.nit/) comes
1.2a Annō in-the-year Dómini of-the-Lord nostri our Iēsū Jesus Christī Christ
1.2b Annō (/ˈan.noː/) in-the-year Dómini (/ˈdo.mi.ni/) of-the-Lord nostri (/ˈnos.tri/) our Iēsū (/ˈje.su/) Jesus Christī (/ˈkris.ti/) Christ
1.3a Ecclēsia the-Church annum year litúrgicum liturgical celebrat celebrates
1.3b Ecclēsia (/ek.ˈkleː.si.a/) the-Church annum (/ˈan.num/) year litúrgicum (/li.ˈtur.dʒi.kum/) liturgical celebrat (/ˈtʃe.le.brat/) celebrates
1.4a Per through tōtum the-whole annum year ōrāmus we-pray
1.4b Per (/per/) through tōtum (/ˈtoː.tum/) the-whole annum (/ˈan.num/) year ōrāmus (/oː.ˈraː.mus/) we-pray
1.5a Hōc this annō year iubilǽus Jubilee est is
1.5b Hōc (/hoːk/) this annō (/ˈan.noː/) year iubilǽus (/ju.bi.ˈleː.us/) Jubilee est (/est/) is
1.6a Multōs many annōs years fídēlem faithful servívit he-served Dóminum the-Lord
1.6b Multōs (/ˈmul.toːs/) many annōs (/ˈan.noːs/) years fídēlem (/ˈfi.deː.lem/) faithful servívit (/ser.ˈvi.vit/) he-served Dóminum (/ˈdo.mi.num/) the-Lord
1.7a In in princípiō the-beginning annī of-the-year grātiās thanks Deō to-God ágimus we-give
1.7b In (/in/) in princípiō (/prin.ˈtʃi.pi.oː/) the-beginning annī (/ˈan.ni/) of-the-year grātiās (/ˈgra.tsi.as/) thanks Deō (/ˈde.oː/) to-God ágimus (/ˈa.dʒi.mus/) we-give
1.8a Annus a-year grātiae of-grace ā from Dóminō the-Lord datus given est is
1.8b Annus (/ˈan.nus/) a-year grātiae (/ˈgra.tsi.eː/) of-grace ā (/aː/) from Dóminō (/ˈdo.mi.noː/) the-Lord datus (/ˈda.tus/) given est (/est/) is
1.9a Trígintā thirty annōs years nātus born baptizātus baptized est was Iēsus Jesus
1.9b Trígintā (/ˈtri.dʒin.ta/) thirty annōs (/ˈan.noːs/) years nātus (/ˈnaː.tus/) born baptizātus (/bap.ti.ˈdza.tus/) baptized est (/est/) was Iēsus (/ˈje.sus/) Jesus
1.10a Singulīs each annīs year Ierúsalem to-Jerusalem ascendébant they-went-up paréntes the-parents eius his
1.10b Singulīs (/sin.ˈgu.lis/) each annīs (/ˈan.nis/) year Ierúsalem (/je.ˈru.sa.lem/) to-Jerusalem ascendébant (/a.ʃen.ˈde.bant/) they-went-up paréntes (/pa.ˈren.tes/) the-parents eius (/ˈe.jus/) his
1.11a Praedicāre to-proclaim annum a-year Dómini of-the-Lord accéptum acceptable mísit he-sent mē me
1.11b Praedicāre (/preː.di.ˈka.re/) to-proclaim annum (/ˈan.num/) a-year Dómini (/ˈdo.mi.ni/) of-the-Lord accéptum (/ak.ˈtʃep.tum/) acceptable mísit (/ˈmi.sit/) he-sent mē (/meː/) me
1.12a Ab from incarnatiōne the-incarnation Dóminicā of-the-Lord annō in-year quīngentēsimō five-hundredth vīcēsimō twentieth quīntō fifth
1.12b Ab (/ab/) from incarnatiōne (/in.kar.na.tsi.ˈoː.ne/) the-incarnation Dóminicā (/do.ˈmi.ni.kaː/) of-the-Lord annō (/ˈan.noː/) in-year quīngentēsimō (/kwin.dʒen.ˈteː.si.moː/) five-hundredth vīcēsimō (/vi.ˈtʃeː.si.moː/) twentieth quīntō (/ˈkwin.toː/) fifth
1.13a Fīnis the-end annī of-the-year próximus near est is et and grātiās thanks Deō to-God deférimus we-bring
1.13b Fīnis (/ˈfi.nis/) the-end annī (/ˈan.ni/) of-the-year próximus (/ˈprok.si.mus/) near est (/est/) is et (/et/) and grātiās (/ˈgra.tsi.as/) thanks Deō (/ˈde.oː/) to-God deférimus (/de.ˈfe.ri.mus/) we-bring
1.14a Memória the-memory annōrum of-years praetéritōrum past in in córdibus hearts nostrīs our manet remains
1.14b Memória (/me.ˈmoː.ri.a/) the-memory annōrum (/an.ˈnoː.rum/) of-years praetéritōrum (/preː.te.ˈri.toː.rum/) past in (/in/) in córdibus (/ˈkor.di.bus/) hearts nostrīs (/ˈnos.tris/) our manet (/ˈma.net/) remains
1.15a In for perpétuōs perpetual annōs years glória glory Deī of-God celebrétur let-be-celebrated
1.15b In (/in/) for perpétuōs (/per.ˈpe.tu.oːs/) perpetual annōs (/ˈan.noːs/) years glória (/ˈgloː.ri.a/) glory Deī (/ˈde.i/) of-God celebrétur (/tʃe.le.ˈbre.tur/) let-be-celebrated
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1.1 Annus novus venit. “The new year comes.”
1.2 Annō Dómini nostri Iēsū Christī. “In the year of our Lord Jesus Christ.”
1.3 Ecclēsia annum litúrgicum celebrat. “The Church celebrates the liturgical year.”
1.4 Per tōtum annum ōrāmus. “We pray throughout the whole year.”
1.5 Hōc annō iubilǽus est. “This year is a Jubilee.”
1.6 Multōs annōs fídēlem servívit Dóminum. “He served the Lord faithfully for many years.”
1.7 In princípiō annī grātiās Deō ágimus. “At the beginning of the year we give thanks to God.”
1.8 Annus grātiae ā Dóminō datus est. “A year of grace has been given by the Lord.”
1.9 Trígintā annōs nātus baptizātus est Iēsus. “Jesus was baptized at thirty years old.”
1.10 Singulīs annīs Ierúsalem ascendébant paréntes eius. “His parents went up to Jerusalem every year.”
1.11 Praedicāre annum Dómini accéptum mísit mē. “He sent me to proclaim the acceptable year of the Lord.”
1.12 Ab incarnatiōne Dóminicā annō quīngentēsimō vīcēsimō quīntō. “In the five hundred twenty-fifth year from the Lord’s incarnation.”
1.13 Fīnis annī próximus est et grātiās Deō deférimus. “The end of the year is near and we bring thanks to God.”
1.14 Memória annōrum praetéritōrum in córdibus nostrīs manet. “The memory of past years remains in our hearts.”
1.15 In perpétuōs annōs glória Deī celebrétur. “Let the glory of God be celebrated for perpetual years.”
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1.1 Annus novus venit.
1.2 Annō Dómini nostri Iēsū Christī.
1.3 Ecclēsia annum litúrgicum celebrat.
1.4 Per tōtum annum ōrāmus.
1.5 Hōc annō iubilǽus est.
1.6 Multōs annōs fídēlem servívit Dóminum.
1.7 In princípiō annī grātiās Deō ágimus.
1.8 Annus grātiae ā Dóminō datus est.
1.9 Trígintā annōs nātus baptizātus est Iēsus.
1.10 Singulīs annīs Ierúsalem ascendébant paréntes eius.
1.11 Praedicāre annum Dómini accéptum mísit mē.
1.12 Ab incarnatiōne Dóminicā annō quīngentēsimō vīcēsimō quīntō.
1.13 Fīnis annī próximus est et grātiās Deō deférimus.
1.14 Memória annōrum praetéritōrum in córdibus nostrīs manet.
1.15 In perpétuōs annōs glória Deī celebrétur.
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These are the grammar rules for annus in Ecclesiastical Latin:
Annus follows the regular second declension masculine pattern like dominus and fīlius:
Case Singular Plural Nominative annus annī Genitive annī annōrum Dative annō annīs Accusative annum annōs Ablative annō annīs Vocative anne annī
Duration of Time (Accusative): To express how long something lasts, use the accusative without a preposition: -
multōs annōs — “for many years” -
per tōtum annum — “throughout the whole year” (with per)
Time When (Ablative): To express the point in time when something happens, use the ablative: -
hōc annō — “this year” -
annō Dómini — “in the year of the Lord”
Distributive (Ablative): To express “every year,” use the ablative: -
singulīs annīs — “each year, every year”
To express someone’s age, Latin uses the accusative of duration with nātus (born): -
trīgintā annōs nātus — “thirty years old” (literally: “born thirty years”)
The genitive can describe characteristics: -
puer decem annōrum — “a boy of ten years” -
annus grātiae — “a year of grace”
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The double -nn- is clearly articulated as a geminate consonant -
Stress falls on the first syllable: AN-nus -
Vowels follow Italian pronunciation: a = /a/, u = /u/
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Confusing the genitive singular annī with the nominative plural annī (context distinguishes them) -
Using the nominative when ablative is required for time expressions -
Forgetting that Anno Domini is ablative, not nominative
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The phrase Annō Dómini (A.D.) was devised by the Scythian monk Dionysius Exiguus in Rome around 525 AD while calculating Easter tables. He wished to date years from the Incarnation of Christ rather than from the reign of the persecuting emperor Diocletian. The Venerable Bede, the English monk and historian, popularized this system in his Ecclesiastical History of the English People (731 AD), and it gradually became standard throughout Christendom, eventually forming the basis for the Western calendar still used worldwide.
The annus litúrgicus structures Catholic worship through a cycle of seasons: Advent, Christmas, Ordinary Time, Lent, the Paschal Triduum, Easter, and Ordinary Time resumed. Each year the Church relives the mysteries of Christ’s life, allowing the faithful to grow deeper in their understanding and love of the Lord.
The annus iubilǽus (Jubilee Year) has biblical roots in Leviticus 25, where every fiftieth year brought freedom for slaves and the return of ancestral lands. Pope Boniface VIII proclaimed the first Christian Jubilee in 1300. Today, Jubilee Years occur every 25 years (with extraordinary Jubilees proclaimed at other times), offering special indulgences and pilgrimages. The year 2025 is a Holy Year proclaimed by Pope Francis.
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annus grātiae — “year of grace” (a blessed year) -
annum Dómini accéptum — “the acceptable year of the Lord” (from Isaiah 61:2, Luke 4:19) -
in perpétuōs annōs — “for perpetual years, forever” -
ab incarnatiōne Dómini — “from the Lord’s incarnation”
English words derived from annus include: annual, annuity, anniversary, annals, per annum, biennial, triennial, perennial, millennium, and superannuated.
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F-A: Interlinear Analysis
Annō in-the-year ab from incarnatiōne the-incarnation Dóminicā of-the-Lord sexcentēsimō six-hundredth quīntō fifth Augustīnus Augustine Britanniam to-Britain venit came
Annō (/ˈan.noː/) in-the-year ab (/ab/) from incarnatiōne (/in.kar.na.tsi.ˈoː.ne/) the-incarnation Dóminicā (/do.ˈmi.ni.kaː/) of-the-Lord sexcentēsimō (/seks.tʃen.ˈteː.si.moː/) six-hundredth quīntō (/ˈkwin.toː/) fifth Augustīnus (/aw.gus.ˈti.nus/) Augustine Britanniam (/bri.ˈtan.ni.am/) to-Britain venit (/ˈve.nit/) came
F-B: Natural Text + Translation
Annō ab incarnatiōne Dóminicā sexcentēsimō quīntō Augustīnus Britanniam venit.
“In the year 605 from the Lord’s incarnation, Augustine came to Britain.”
F-C: Original Language Only
Annō ab incarnatiōne Dóminicā sexcentēsimō quīntō Augustīnus Britanniam venit.
F-D: Vocabulary & Grammar Notes -
annō — ablative singular expressing time when -
ab incarnatiōne — “from the incarnation” (ablative with preposition) -
Dóminicā — adjective agreeing with incarnatiōne (feminine ablative) -
sexcentēsimō quīntō — ordinal numerals (605th) in ablative agreeing with annō -
Augustīnus — St. Augustine of Canterbury, sent by Pope Gregory I -
Britanniam — accusative of motion toward (to Britain) -
venit — 3rd person singular perfect of veniō (he came)
F-E: Literary & Contextual Commentary
This passage from Bede’s Ecclesiastical History demonstrates the Anno Domini dating system in action. Bede was instrumental in spreading this method of reckoning years throughout medieval Europe. His history traces the conversion of the Anglo-Saxons to Christianity, beginning with Pope Gregory the Great’s mission led by Augustine to King Æthelberht of Kent. The phrase annō ab incarnatiōne Dóminicā (”in the year from the Lord’s incarnation”) became the standard formula for historical dating in Western Christendom, eventually abbreviated to the familiar “A.D.” that we still use today.
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The following examples trace the liturgical year as the Church marks sacred time through its seasons and feasts.
Section A: Interlinear Construed Text
Annī (/ˈan.ni/) of-the-year cursus (/ˈkur.sus/) the-course Pentecóste (/pen.te.ˈkoː.ste/) with-Pentecost ad (/ad/) to culmen (/ˈkul.men/) the-summit pervénit (/per.ˈweː.nit/) arrives
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This section covers the major divisions of the ecclesiastical calendar:
- Advent (4 weeks) → Christmas/Nativity (15 days) → Epiphany - Lenten Season (Quadragésima) - 40 days of penance - Easter (Pascha) - celebrated yearly - Easter Season (Tempus Paschāle) - extends 50 days - Pentecost - the summit/culmination of the liturgical year
The text emphasizes that throughout the entire year, the Church commemorates the mysteries of Christ through this cyclical calendar structure.
This passage discusses the liturgical year structure in the Roman Catholic Church. Here's a summary of the key points:
2.8 - The liturgical year reaches its summit at Pentecost
2.9 - Ordinary Time comprises thirty-four Sundays throughout the year
2.10 - The Feast of Corpus Christi is observed annually after Trinity Sunday
2.11 - Saints are commemorated throughout the year so that the faithful may have examples of virtue
2.12 - The last day of the year invites reflection on grace received
2.13 - The new year brings new hopes to us
2.14 - A year well-lived is preparation for eternal life
2.15 - The Gloria Patri (doxology) - the traditional trinitarian praise formula
- Pronunciation guides (2.9b onwards) show ecclesiastical Latin pronunciation - Case endings reflect Latin's grammatical system (ablative, accusative, nominative, dative) - Verb conjugations include passive forms (observātur = "is observed," donāntur = "are given") - The final section (2.15) is the traditional Gloria Patri or Lesser Doxology, a foundational liturgical formula
This appears to be educational material teaching ecclesiastical Latin with careful attention to pronunciation and grammatical structure. ✾ ❦ ✾ ❦ ✾ ✾ ❦ ✾ ❦ ✾ ✾ ❦ ✾ ❦ ✾ Section B: Natural Sentences with Translations
2.1 Annus litúrgicus cum Advéntu íncipit. “The liturgical year begins with Advent.”
2.2 Quattuor hebdómadae Advéntūs praepārant nōs ad Nātīvitātem Dómini. “The four weeks of Advent prepare us for the Nativity of the Lord.”
2.3 Tempus Nātīvitātis quindecim diēs dūrat usque ad Epiphániam. “The Christmas season lasts fifteen days until Epiphany.”
2.4 Per annum Ecclēsia mystéria Christī mémorat. “Throughout the year the Church commemorates the mysteries of Christ.”
2.5 Quadragésima quadragíntā diēs poeniténtiae cóntinet. “Lent contains forty days of penance.”
2.6 Quōtannīs Ecclēsia Pascha Dómini celebrat. “Every year the Church celebrates the Easter of the Lord.”
2.7 Tempus Paschāle quinquagíntā annuōs diēs exténditur. “The Easter season extends for fifty annual days.”
2.8 Annī cursus Pentecóste ad culmen pervénit. “The course of the year arrives at its summit with Pentecost.”
2.9 Témpora Ordinárii per annum trigíntā quattuor Domínicās cómputant. “The seasons of Ordinary Time throughout the year count thirty-four Sundays.”
2.10 Festum Córporis Christī post Trinitātem annuātim observātur. “The Feast of Corpus Christi is observed annually after Trinity.”
2.11 Sānctī per anni circulum commemorántur ut fídēles exémpla virtútis hábeant. “The saints are commemorated through the cycle of the year so that the faithful may have examples of virtue.”
2.12 Ultimus diēs annī ad grātiam acceptam contemplándam invítat. “The last day of the year invites us to contemplate the grace received.”
2.13 Novō annō novae spēs nóbīs donántur. “With the new year new hopes are given to us.”
2.14 Annus bene vīsus praeparātiō est ad vītam aetérnam. “A year well lived is preparation for eternal life.”
2.15 Glória Patri et Fíliō et Spirítuī Sānctō sīcut erat in princípiō et nunc et semper et in sǽcula saeculōrum. “Glory be to the Father, and to the Son, and to the Holy Spirit, as it was in the beginning, is now, and ever shall be, for ages of ages.”
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Section C: Latin Text Only
2.1 Annus litúrgicus cum Advéntu íncipit.
2.2 Quattuor hebdómadae Advéntūs praepārant nōs ad Nātīvitātem Dómini.
2.3 Tempus Nātīvitātis quindecim diēs dūrat usque ad Epiphániam.
2.4 Per annum Ecclēsia mystéria Christī mémorat.
2.5 Quadragésima quadragíntā diēs poeniténtiae cóntinet.
2.6 Quōtannīs Ecclēsia Pascha Dómini celebrat.
2.7 Tempus Paschāle quinquagíntā annuōs diēs exténditur.
2.8 Annī cursus Pentecóste ad culmen pervénit.
2.9 Témpora Ordinárii per annum trigíntā quattuor Domínicās cómputant.
2.10 Festum Córporis Christī post Trinitātem annuātim observātur.
2.11 Sānctī per anni circulum commemorántur ut fídēles exémpla virtútis hábeant.
2.12 Ultimus diēs annī ad grātiam acceptam contemplándam invítat.
2.13 Novō annō novae spēs nóbīs donántur.
2.14 Annus bene vīsus praeparātiō est ad vītam aetérnam.
2.15 Glória Patri et Fíliō et Spirítuī Sānctō sīcut erat in princípiō et nunc et semper et in sǽcula saeculōrum.
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Section D: Genre Grammar Notes
The genre section illustrates how annus appears in liturgical calendar contexts: -
Annus litúrgicus — The liturgical year: annus in nominative with the adjective litúrgicus (from Greek λειτουργικός) -
Per anni circulum — Through the year’s cycle: anni in genitive singular with circulum (accusative of circulus) -
Quōtannīs — Every year: compound adverb from quot (how many) + annīs (ablative plural), showing the ablative’s distributive use fossilized into an adverb -
Annuātim — Annually: adverb derived from annus, meaning “year by year” -
In sǽcula saeculōrum — For ages of ages: While not annus, this phrase uses a related temporal concept; saeculum originally meant “generation” or “age” (roughly a century), and this liturgical phrase expresses eternity
The liturgical year demonstrates how the Church sanctifies time itself, making each year a pilgrimage through the mysteries of salvation history.
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This lesson is part of a systematic Ecclesiastical Latin course following the Latinum Institute methodology. The curriculum progresses through approximately 1000 words organized by frequency, ensuring that learners encounter the most useful vocabulary first.
Course Features: -
Authentic Catholic texts drawn from Scripture, liturgy, and Church Fathers -
Interlinear glossing for autodidactic accessibility -
Ecclesiastical (Italianate) pronunciation throughout -
Cultural and theological context for each term -
Progressive difficulty within each lesson
The interlinear method allows learners to access complex Latin texts from the very beginning, building comprehension through repeated exposure to authentic patterns rather than artificial grammatical exercises.
Links: -
Course Index: https://latinum.substack.com/p/index -
Latinum Institute Reviews: https://uk.trustpilot.com/review/latinum.org.uk
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Annō Dómini MMXXVI
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