Lewis & Short

intrā, adv. and prep. [contr. from intĕrā; sc. parte], on the inside, within (class. only as a prep.).

  1. I. Adv. (post-Aug.).
    1. A. In gen.: quadraginta per oram, intra centum erunt, Quint. 1, 10, 43: pars, quae intra, longior esse debet, quam quae extra, Cels. 7, 15: si inciditur, viridis intra caro apparet, id. 5, 28, 13: vasa extrinsecus, et intra diligenter picata, Col. 12, 43, 7.
    2. B. Esp.
      1. 1. Of the interior of countries: intra vix jam homines magisque semiferi, Mela, 1, 4, 4.
      2. 2. Of the interior of a building: pro rostris aurata aedes … intraque lectus eburneus, Suet. Caes. 84: intra forisque, Petr. 22.
      3. 3. Of the Mediterranean Sea, Mela, prooem. 2: abunde orbe terrae extra intra indicato (opp. extra, of the ocean), Plin. 6, 32, 38, § 205 fin.
    3. C. Inwardly, towards the inside (rare): binos interim digitos distinguimus … paulum tamen inferioribus intra spectantibus, Quint. 11, 3, 98.
  2. II. Prep. with acc. (placed after its noun: praeturam intra, Tac. A. 3, 75, and: lucem intra, id. ib. 4, 48), within.
    1. A. Lit., of place: intra navim, Plaut. Merc. 1, 2, 75: intra parietes meos, Cic. Att. 3, 10: carceres stare, Auct. Her. 4, 3: jactum teli, within a javelin’s throw, Verg. A. 11, 608: montem Taurum, Cic. Sest. 27: locus intra oceanum jam, nullus est, quo non, etc., id. Verr. 2, 3, 89: Apenninum, Liv. 5, 35: ea intra se consumunt Arabes, consume among themselves, in their own country, Plin. 12, 21, 45, § 99: Sy. Devoravi nomen inprudens modo. Ch. Non placet qui amicos intra dentis conclusos habet, behind, Plaut. Trin. 4, 2, 64; cf.: inter dentis, id. ib. 4, 2, 80 Brix.
    2. B. Transf.
      1. 1. I. q. in with acc., in, into: ea intra pectus se penetravit potio, Plaut. Truc. 1, 1, 23: nosse regiones, intra quas venere, Cic. de Or. 2, 34: qui intra fines suos Ariovistum recepissent, Caes. B. G. 1, 32: intra moenia compulsus, Liv. 34, 33.
      2. 2. Of time, within, during, in the course of, in less than: intra viginti dies, Plaut. Curc. 3, 77: qui intra annos quatuordecim tectum non subiissent, Caes. B. G. 1, 36: quae intra decem annos facta sunt, Cic. Verr. 1, 13, 37 (dub.; B. and K. inter): intra paucos dies, Liv. 23, 41; Suet. Caes. 8: intra breve tempus, id. Tib. 51; id. Claud. 38: juventam, in youth, Tac. A. 2, 71.
        With quam ( = postquam): intra decimum diem quam Pheras venerat, i. e. before the lapse of ten days after his arrival, Liv. 36, 10, 1; 43, 9, 2; Quint. 1, 12, 9; Suet. Caes. 35 al.
    3. C. Trop.
      1. 1. Under, below, i. e. less than, fewer than, within the limits of: intra centum, Liv. 1, 43: epulari intra legem, i. e. less expensively than the law allows, Cic. Fam. 9, 26, 9: intra modum, id. ib. 4, 4, 14: intra verba desipere, to betray insanity in words only, Cels. 3, 18: intra verba peccare, to transgress in words only, Curt. 7, 1, 25: intra gloriam fuit facinus, i. e. was not inglorious, Flor. 1, 3: intra silentium se tenere, to keep silence, Plin. Ep. 4, 16: intra famam sunt scripta, beneath his reputation, Quint. 11, 3, 8: intra fortunam, Prop. 4, 8, 2.
      2. 2. With acc. of pron., within or among.
          1. (α) Intra se, inwardly, to one’s self: meditantes intra semet, Plin. 10, 42, 59, § 118: intra se dicere, Quint. 10, 7, 25: intra se componere, id. 11, 3, 2.
          2. (β) Secretly: intra vos futura, shall remain among yourselves, be kept secret, Plin. Ep. 3, 10, 4.