persulfideWiktionary 原文构词拆分per-前缀(no longer productive) In verbs: denoting the sense "through", as in perforate. · (no longer productive) In verbs: denoting the sense "thoroughly", as in perfect.+sulfide词根/词干词源说明From per- + sulfide.释义（英文）名词 Noun(chemistry) Any sulfide containing more than the usual proportion of sulfur atoms