trabeculae definition anatomy
traâ¢becâ¢uâ¢la. 1. a structural body part that resembles a beam or a crossbar. 2. any of the barlike tissue structures that extend across the cavity in a plant duct or sac, as in the sporangium of a moss. trabÄcula, Latin: little beam]. traâ¢becâ²uâ¢lar, traâ¢becâ²uâ¢late (-lÉªt, -ËleÉªt) adj.