Lewis Short
(v. a.P. a.) : ex-plāno, āvi, ātum, 1, v. a. *
* Lit., to flatten or spread out: suberi cortex in denos pedes undique explanatus,Plin. 16, 8, 13, § 34.
* Trop., of speech, to make plain or clear, to explain (class.: syn.: explico, expono, interpretor): qualis differentia sit honesti et decori, facilius intelligi quam explanari potest,Cic. Off. 1, 27, 94; cf. Quint. 5, 10, 4: rem latentem explicare definiendo, obscuram explanare interpretando, etc.,Cic. Brut. 42, 152: explanare apertiusque dicere aliquid,id. Fin. 2, 19, 60: docere et explanare,id. Off. 1, 28, 101: aliquid conjecturā,id. de Or. 2, 69, 280: rem,id. Or. 24, 80: quem amicum tuum ais fuisse istum, explana mihi,Ter. Ph. 2, 3, 33: de cujus hominis moribus pauca prius explananda sunt, quam initium narrandi faciam,Sall. C. 4, 5.—Pass. impers.: juxta quod flumen, aut ubi fuerit, non satis explanatur,Plin. 6, 23, 26, § 97.
* To utter distinctly: et ille juravit, expressit, explanavitque verba, quibus, etc.,Plin. Pan. 64, 3.—Hence, explānātus, a, um, P. a. (acc. to II.), plain, distinct (rare): claritas in voce, in lingua etiam explanata vocum impressio,i. e. an articulate pronunciation,Cic. Ac. 1, 5, 19: parum explanatis vocibus sermo praeruptus, Sen. de Ira, 1, 1, 4.—Adv. ex-plānāte, plainly, clearly, distinctly: scriptum,Gell. 16, 8, 3.—Comp.: ut definire rem cum explanatius, tum etiam uberius (opp. presse et anguste),Cic. Or. 33, 117.
Charlton T. Lewis, Charles Short, A Latin Dictionary