a. Obs. rare. [f. prec. + -ABLE.] Admitting of being passed through or over; capable of being crossed.
1614. Raleigh, Hist. World, I. (1634), 98. The navigable River of Tygris which is everywhere transpassable by boates of great burthen.
1668. Culpepper & Cole, Barthol. Anat., III. vi. 140. The foremore and deeper parts [of the lateral ventricles of the brain] are near to the Mammillary processes, and they are in some manner transpassable.