The Collaborative International Dictionary of English v.0.48:
Neoplastic \Ne`o*plas"tic\ (n[=e]`[-o]*pl[a^]s"t[i^]k), a. (Physiol. & Med.) Of or pertaining to neoplasty, or neoplasia. [1913 Webster]WordNet (r) 3.0 (2006):
neoplastic adj 1: of or related to or having the properties of a neoplasm; "neoplastic cells"