from 1540s, in various sense, from Latin cotyledon "pennywort, navelwort," from Greek kotyledon "cup-shaped cavity," from kotyle "hollow thing, small vessel," also the name of a small liquid measure (nearly a half-pint); which is of uncertain origin. Botanical sense is 1776, from Linnaeus (1751).
雙語例句
1. Fructification includes peel, seed coat, cotyledon and embryo 4 parts.
果實(shí)包括果皮.種皮.子葉和胚四部分.
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2. Its cotyledon node zone is telome elongation type.
結(jié)果表明:向日葵幼苗的子葉節(jié)區(qū)類型為頂枝伸長(zhǎng)型.
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3. Among cotyledon , petiole of cotyledon, hypocotyl, and radicle, hypocotyl has the most responsive explants to 2, 4 - D .