ectomesenchymeWiktionary 原文英美构词拆解ectoecto-前缀mesenchymemesenchyme词干ecto-Outside. · (chiefly in fantasy fiction) Ghost-related.词源说明From ecto- + mesenchyme.释义名词noun1(anatomy) A form of mesenchyme, in the embryo, consisting of neural crest cells; forms the tissues of the neck and cranium