[di.ver.tic.u.lum] n, pl -la [NL, fr. L, bypath, prob. alter. of deverticulum, fr. devertere to turn aside, fr. de- + vertere] (ca. 1819) 1: an abnormal pouch or sac opening from a hollow organ (as the intestine or bladder)
2: a pocket or closed branch opening off a main passage -- di.ver.tic.u.lar adj