单词	nephridium
释义	nephridium noun ne·​phrid·​i·​um ni-ˈfri-dē-əm  plural nephridia ni-ˈfri-dē-ə  : a tubular glandular excretory organ characteristic of various invertebrates nephridial ni-ˈfri-dē-əl  adjective Word History Etymology New Latin First Known Use 1877, in the meaning defined above Medical Definition nephridium noun ne·​phrid·​i·​um ni-ˈfrid-ē-əm  plural nephridia -ē-ə  : an excretory organ that is characteristic of various coelomate invertebrates (as annelid worms, mollusks, brachiopods, and some arthropods), occurs paired in each body segment or as a single pair serving the whole body, typically consists of a tube opening at one end into the coelom and discharging at the other end on the exterior of the body, is often lengthened and convoluted, and has glandular walls
随便看	inselbergs inseminate inseminated inseminates inseminating insemination inseminations inseminator inseminators insensate insensately insensateness insensatenesses insense insensibilities insensibility insensible insensibleness insensiblenesses insensibly insensitive insensitively insensitiveness insensitivenesses insensitivities

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。