Explicábilis, & hoc explicábile, pen. cor. Plin. That may bee declared.Difficilis & explicabilis res.Cic.Explicate pen. prod. Aduerb. Cic.Plainely: manifestly.
Lewis and Short: Latin dictionary
explĭcābĭlis, e, adj. [explico], that may be explained, explicable (very rare): mensura, Plin. 4, 13, 28, 98.—Adv.: ex-plĭcābĭlĭter, in an explicable manner, acc. to Diom. p. 401 P.; Mar. Plot. de Metr. p. 2623.