单词	coleorhiza
释义	coleorhiza /ˌkɒlɪə(ʊ)ˈrʌɪzə / noun (plural coleorhizae /ˌkɒlɪə(ʊ)ˈrʌɪziː/) Botany A sheath protecting the root of a germinating grass or cereal grain.Indeed, at the end of stage II, scutellum, coleoptile, coleorhiza, primary root primordium, and leaf primordia have already been reported to be present.... Seminal roots do not form a coleorhiza since the scutellar node tissue is already differentiated when seminal roots emerge and can easily be penetrated. Longitudinal sections of the embryonic root showed that the structures that protect the rootlet, i.e. the root-cap and coleorhiza, were strongly labelled. Origin Mid 19th century: from koleos 'sheath' + rhiza 'root'.
随便看	stude student student-at-law student card student-centered student-centred student council student demonstration student demonstrator studentdom student driver student duel studentess student exchange student-friendly student ghetto studenthood studential studenting student interpreter student interpretership studentise studentish studentism studentize

英语词典包含243303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。