To pierce: to enter: to penetrate. Penetrare Atlantem. Plin. To passe beyond the mountaine Atlas. Penetrare in cœlum. Cic. To enter into heanen. In extremos Indos penetrare. Cato. To go euen vnto the furthest part of Indie. In maria penetrare. Plin. In portum penetrare. Cic. To enter into. In quædam templa penetrare. Cic. Ad vrbem penetrare. Ouid. Ad vrbes sede sque aliquorum penetrare. Cic. To go or enter euen to. Penetrare in vrbem. Liu. stra per cœlum penetrantia. Cice. Starres going throughe the firmament. Penetrare sub terras. Ci. To go downe vnder the earth. In eam specum me penetro & recondo. Gell. I enter and go downe into that denne. Quò homo se penetrauit? Plaut. Whither went that felowe, or whither hath he slip in? Penetrare se in fugam, Fugere. Plaut. To runne away: to flie. Si intra ædes huius vnquam penetraui pedem. Plau. If euer I entred one foote into his house. Quando id primum ad Romanos penetrauerit, non facilè dixerim. Plin. When that first came vppe among the Romatnes, I cannot well tell. Vox penetrat ad aures. Ouid. Ad sensum, opinionemque alicuius penetrare. Cic. Nulla res magis penetrat in anamos, eosqúe fingit, format, flectit. Cic. Nothing entreth more into mens minds. Contagia morbi penetrant in animum. Lucret. Tremor penetrat in artus. Ouid. Pauor penetrans in præcordia. Sil. Nihil tamen Tiberium magis penetrauit. Tacit. Nothing sanke more deepely into Tiberius his minde.

I. Act.

A. To put, place, or set any thing into any thing (ante- and post-class.; v. Brix ad Plaut. Trin. 1, 2, 109).

1. Lit.: penetrare pedem intra aedes, Plaut. Men. 5, 2, 64; 2, 3, 49: quo illic homo foras se penetrat ex aedibus? to betake one's self, go in any direction, id. Trin. 2, 2, 1: me ad pluris penetravi, id. ib. v. 14: se in fugam, to take to flight, id. Am. 1, 1, 94: in eam (specum) me penetro et recondo, Gell. 5, 14, 18.—To enter, penetrate: ea intra pectus se penetravit potio, Plaut. Truc. 1, 1, 23.—In the same sense, mid.: quae penetrata queunt sensum progignere acerbum, having entered, having penetrated, Lucr. 4, 670; 1246.—

2. Trop.: Labeo Antistius in grammaticam sese atque dialecticam litterasque antiquiores altioresque penetraverat, had penetrated into, Gell. 13, 10, 1.—

B. Aliquid, to pierce into any thing; to enter, penetrate any thing (poet. and in post-Aug. prose).

1. Lit., Lucr. 4, 894: (semen) penetrare locos nequit, id. 4, 1246: vox aures penetrat, id. 4, 613: hominem cum vini vis penetravit Acris, id. 3, 476: Illyricos sinus, Verg. A. 1, 243: nave Aegyptum, Suet. Caes. 52: mediae cryptam Suburrae, Juv. 5, 106. —Pass.: ut (India) penitus nequeat penetrari, Lucr. 2, 539: penetratae cum victoriā Media, Albania, etc., Vell. 2, 40, 1: penetrata limina montis, Stat. S. 4, 6, 104: iter L. Lucullo penetratum, Tac. A. 15, 27.—

2. Trop.: id Tiberii animum altius penetravit, Tac. A. 1, 69; cf. id. ib. 3, 4.—With subject-clause: tum penetrabat eos, posse haec, etc., it entered their thoughts, it occurred to them, Lucr. 5, 1262.—

II. Neutr., to enter, penetrate into any place or thing, betake one's self (class.; cf.: pervado, permano).

A. Lit.: in palaestram, Plaut. Bacch. 1, 1, 32: sub terras, Cic. Verr. 2, 4, 48, 107: ad os Pelusii, Curt. 4, 1, 29: in ipsum portum, Cic. Verr. 2, 5, 37, 96: in castra hostium, Liv. 2, 12, 3: in artissimas fauces, Curt. 5, 3, 17: ad urbes, Cic. Prov. Cons. 13, 32: per angustias, id. Tusc. 1, 20, 45: intra vallum, Liv. 39, 31: in urbem, id. 2, 53: cum eo penetrasset, thus far, Nep. Chabr. 4: astra per caelum penetrantia, Cic. Univ. 9: penetrat vox ad aures, Ov. M. 12, 42: usque ad nares, Cels. 7, 7.—Impers. pass.: in eam speluncam penetratum cum signis est, Liv. 10, 1.—

B. Trop.: Romuli animus haec ipsa in templa penetravit, Cic. Rep. 6, 22, 24: hominum ratio in caelum usque penetravit, id. N. D. 2, 61, 163: nulla res magis penetrat in animos, id. Brut. 38, 142: penetrare ad sensum judicis opinionemque, id. Part. 36: quo non ars penetrat? Ov. A. A. 3, 291: in provincias quoque grammatica penetraverat, Suet. Gram. 3.