(verb) : pĕnētro, āvi, ātum, 1, and n. root pa- of pasco; v. penates.
* Act.
* To put, place, or set any thing into any thing (ante- and post-class.; v. Brix ad Plaut. Trin. 1, 2, 109).
* Neutr., to enter, penetrate into any place or thing, betake one's self (class.; cf.: pervado, permano).
* Aliquid, to pierce into any thing; to enter, penetrate any thing (poet. and in post-Aug. prose).
* 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.
* 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.
* 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.
* 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.

s. TLL