theca /'θi:kә/ 📖 中文释义 n. 囊, 膜, 鞘[医] 膜, 鞘 📘 English Definition(英文释义) n. a case or sheath especially a pollen sac or moss capsulen. outer sheath of the pupa of certain insects ← thebolactic acid T 字母词表 theca cordis →