opisthobranchWiktionary 原文/ɵˈpɪsθəbræŋk/构词拆解opisthoopistho-前缀branchbranchia词干opistho-in the back, behind, rear, posterior · to the back, pointing or bending backwards词源说明From opistho- + branchia.释义名词noun1(zoology) A gastropod with gills behind the heart, formerly thought to belong to a single group.形容词adjective1of gillsPlaced behind the heart.2of a gastropodHaving gills placed behind the heart.同族词