ectosymbiontWiktionary 原文英美构词拆解ectoecto-前缀symbiontsymbiont词干ecto-Outside. · (chiefly in fantasy fiction) Ghost-related.词源说明From ecto- + symbiont.释义名词noun1(ecology) A partner in a symbiotic relationship that remains on the surface of its host or occupies a body cavity同族词派生词 1ectosymbiontic