The Collaborative International Dictionary of English v.0.48:
morphemic \mor*phem"ic\ (m[^o]r*f[=e]m"[i^]k), a. (Linguistics) Of or pertaining to a morpheme. [PJC] -- mor*phem"ic*al*ly, adv.WordNet (r) 3.0 (2006):
morphemic adj 1: of or relating to morphemes