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单词	allantois
释义	allantois noun al·​lan·​to·​is ə-ˈlan-tə-wəs  plural allantoides ˌa-lən-ˈtō-ə-ˌdēz  ˌa-ˌlan- : a vascular fetal membrane of reptiles, birds, and mammals that is formed as a pouch from the hindgut and that in placental mammals is intimately associated with the chorion in formation of the placenta allantoic ˌa-lən-ˈtō-ik  ˌa-ˌlan- adjective Word History Etymology New Latin, ultimately from Greek allant-, allas sausage First Known Use 1615, in the meaning defined above Medical Definition allantois noun al·​lan·​to·​is ə-ˈlant-ə-wəs  plural allantoides ˌal-ən-ˈtō-ə-ˌdēz  ˌal-ˌan-  : a vascular fetal membrane of reptiles, birds, or mammals that is formed as a pouch from the hindgut and that in placental mammals is intimately associated with the chorion in formation of the placenta
随便看	string along with (someone or something) string along with someone or something string and ray rot string bag string bass string bean string bikini string bikinis string cheese string correspondent string development string figure string game string insulator string lead string line string organ string proof string quartet string theory string tie string together string tone string trimmer string trio

英语词典包含469781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。