The Collaborative International Dictionary of English v.0.48:
Nontoxic \Non*tox"ic\, a. Not toxic. [1913 Webster]WordNet (r) 3.0 (2006):
nontoxic adj 1: not producing or resulting from poison [syn: nontoxic, atoxic] [ant: toxic] 2: safe to eat [syn: nonpoisonous, non-poisonous, nontoxic]