| 单词 | calyptrogen |
| 释义 | calyptrogen[ kuh-lip-truh-juhn ] / kəˈlɪp trə dʒən / noun Botany.the histogen layer that develops into the root cap. Origin of calyptrogen1880–85; calyptro- (combining form of calyptra) + -gen Words nearby calyptrogenCalydonian hunt, Calymmatobacterium, Calypso, calypsonian, calyptra, calyptrogen, calyx, Calzaghe, calzone, cam, cama Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for calyptrogencalyptrogen / (kəˈlɪptrədʒən) / nouna layer of rapidly dividing cells at the tip of a plant root, from which the root cap is formed. It occurs in grasses and many other plants Word Origin for calyptrogenC19: from calyptra + -gen Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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