octocoralWiktionary 原文英美构词拆解octoocto-前缀coralcoral词干octo-eight词源链mulOctocorallia↓ 派生英语Englishoctocoral词源说明Back-formation from translingual Octocorallia. By surface analysis, octo- + coral.释义名词noun1(marine biology) An anthozoan of the subclass Alcyonaria, having eight-branched tentacles and eight septa.