The Collaborative International Dictionary of English v.0.48:
chiasmal \chiasmal\ chiasmatic \chiasmatic\ chiasmic \chiasmic\adj. of or pertaining to a chiasma. [WordNet 1.5]WordNet (r) 3.0 (2006):
chiasmic adj 1: of or relating to a chiasm [syn: chiasmal, chiasmic, chiasmatic]