The Collaborative International Dictionary of English v.0.48:
Nonsexual \Non*sex"u*al\, a. Having no distinction of sex; sexless; neuter. [1913 Webster]WordNet (r) 3.0 (2006):
nonsexual adj 1: not having or involving sex; "an asexual spore"; "asexual reproduction" [syn: asexual, nonsexual] [ant: sexual]