Entry 3 senses · 2 variants Webster, 1913 Fragmental · Frag·men·tal · IPA a. n. 01 a. Fragmentary. 1. Fragmentary. 2. Consisting of the pulverized or fragmentary material of rock, as conglomerate, shale, etc.(Geol.) 02 n. A fragmentary rock. 1. A fragmentary rock.(Geol.)