单词 | deltidium |
释义 | ‖ deltidium Conch.|dɛlˈtɪdɪəm| [mod.L. dim. of Gr. δέλτα delta, in reference to its shape. (Cf. Gr. κυνίδιον little dog, from κυν-.)] The triangular space, usually covered in by a horny shell or operculum, between the beak and the hinge of brachiopod shells.
1851Richardson Geol. viii. (1855) 232 The form and structure of the area and deltidium afford good generic characters. 1888Rolleston & Jackson Anim. Life 693 The groove is usually converted into a foramen by a ‘deltidium’ which consists of two calcareous pieces. |

英语词典包含277258条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。
相关内容11:
相关热词搜索:deltidium英英词典英英释义英语词汇意思用法释义英语