epitoxoidWiktionary 原文英美构词拆解epiepi-前缀toxoidtoxoid词干epi-Above in location or position. · Upon, atop, directly on top of in terms of position.词源说明From epi- + toxoid.释义名词noun1obsoleteA toxoid that generates less of an immune response than an original one同族词相关词 1syntoxoid