annus (noun M) : acc. to some, as Corssen, Beitr. 16, for am-nus, from 2. an- am-; or acc. to others, directly from 2. anus, a ring, and kindred to the form appearing, in ἐνοαυτός, δί-ενος, τρί-ενος.
* Lit., a circuit, circular course, periodical return: tempus a brumā ad brumam, dum sol redit, vocatur annus; quod, ut parvi circuli anuli, sic magni dicebantur circites ani, unde annus,Varr. L. L. 6, § 8 Müll.; cf. for the same idea: circum tribus actis annis,Lucr. 5, 883: anno, qui solstitiali circumagitur orbe,Liv. 1, 19; 6, 1: quae (stellae) volvunt magnos in magnis orbibus annos,Lucr. 5, 644; so Verg. A. 1, 234: multis solis redeuntibus annis,Lucr. 1, 311; so Verg. A. 8, 47; cf. also Voss ad Verg. G. 2, 402; and the Heb. = month, from = to renew; hence, a year (consisting among the Rom. orig. of ten months, ending with Dec. and beginning with Mart., but from the time of Numa of twelve): annos sexaginta natus,Ter. Heaut. 1, 1, 10: principio circum tribus actis impiger annis Floret equus,Lucr. 5, 881: tempora mutare annorum,the seasons,id. 2, 170: anni tempus, Varr, R. R. 1, 46: nemo est tam senex, qui se annum non putet posse vivere,Cic. Sen. 7, 24: centum et septem complevit annos,id. ib. 5, 13 et saep.: anni fugaces,Hor. C. 2, 14, 1: anni mobiles,id. A. P. 157: annus piger,id. Ep. 1, 1, 21: anni breves,id. C. 4, 13, 23: per exactos annos,id. ib. 3, 22, 6: initio anni,Liv. 2, 52: principio anni,id. 2, 48: anno ineunte,Suet. Calig. 42; id. Tib. 54: anno exeunte,Cic. Div. 1, 25: extremo anno,Liv. 2, 64: extremo anni,Tac. A. 6, 27: anno circumacto,Liv. 6, 1: vertente anno,Vulg. 2 Reg. 11, 1: annus totus,Hor. S. 2, 3, 1: annus solidus,a full year,Liv. 1, 19.—Poet.: pleno anno,at the close of,Hor. C. 3, 18, 5; Plaut. Stich. 1, 1, 30; id. Men. 2, 1, 9: nondum centum et decem anni sunt, cum lata est lex,Cic. Off. 2, 21, 75: lex anno post quam lata sit abrogata, id. Cornel. Fragm. ap. Orell. IV. 2, p. 448.
* Adverb. phrases.
* Transf.
* A year ago, last year, πέρυσι (for the most part anteclass.; not used by Cic.),Plaut. Am. prol. 91: quattuor minis ego emi istanc anno,id. Men. 1, 3, 22; id. Truc. 2, 4, 39: utrum anno an horno te abstuleris a viro, Lucil. ap. Non. p. 121, 8; so, ab anno priore,Vulg. 2 Cor. 8, 10; and: ab anno praeterito,ib. ib. 9, 2.
* Annum, a year, during a whole year: matronae annum eum luxerunt,Liv. 2, 7.
* Ad annum, for the coming year, a year hence: faciendum est ad annum,Cic. de Or. 3, 24, 92: quem ad annum tribunum plebis videbam fore,id. Att. 5, 2.
* In annum.
* For a year: prorogatum in annum im perium est, Liv. 37, 2, 11: si quid Est (gnaws) animum, differs curandi tempus in annum? Hor. Ep. 1, 2, 39: provisae frugis in annum Copia,id. ib. 1, 18, 109.
* Per annos, year by year, yearly: arva per annos mutant, et superest ager,Tac. G. 26; so, per omnes annos,Vulg. Lev. 16, 34; ib. Luc. 2, 41.
* Omnibus annis, all the years, always, Hor. Ep. 1, 7, 21.
* Poet., a part of a year, a season of the year: nunc frondent silvae, nunc formosissimus an-nus,now the forest is clothed with verdure, now the year is most beautiful,Verg. E. 3, 57; so, pomifer annus,Hor. C. 3, 23, 8: hibernus annus,id. Epod. 2, 29: Pisaeumque domus non aestuat annum, i. e. the summer (in which season of the year the Olympic games were celebrated at Pisa), Stat. S. 1, 3, 8.
* The produce of the year (poet. or in post-Aug. prose; cf. annona, I.),Luc. 9, 437: agricolae annum flevere,id. 3, 452; 3, 70; Stat. Th. 4, 710; Val. Fl. 5, 424: nec arare terram aut exspectare annum,Tac. G. 14, ubi v. Rup.; cf. Schwarz ad Plin. Pan. 29.
* Time of life (poet.): Dum vernat sanguis, dum rugis integer annus,while your years are free from wrinkles,Prop. 5, 5, 59: vitae longus et annus erit,the years of life,id. 3, 7, 38.
* In polit. life, the age to which one must attain in order to be appointed to an office (cf. annalis, II.): quod hoc honore me adfecistis primā petitione, quod anno meo,Cic. Agr. 2, 2: subito reliquit annum suum seseque in annum proximum transtulit,id. Mil. 9, 24: qui anno suo petierint,id. ib. 9, 24; id. Att. 1, 1; id. Fam. 10, 25.
* In astronomy: annus magnus or mundanus, the period of time in which the constellations return to the same place; acc. to Macr. Somn. Scip. 2, 11, 15,000 years; v. Cic. N. D. 2, 20; Tac. Or. 16; and Madv. ad Cic. Fin. 2, 31, 102.

s. TLL