| 单词 | rootcap |
| 释义 | rootcap[ root-kap, root- ] / ˈrutˌkæp, ˈrʊt- / noun Botany.the loose mass of epidermal cells covering the apex of most roots, serving to protect the meristematic cells behind it. Origin of rootcapFirst recorded in 1875–80; root1 + cap1 Words nearby rootcaproot-and-branch, rootball, root beer, root canal, root canal therapy, rootcap, root caries index, root cellar, root climber, root crop, root division Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for rootcaproot cap nouna hollow cone of loosely arranged cells that covers the growing tip of a root and protects it during its passage through the soil 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 Scientific definitions for rootcaproot cap A thimble-shaped mass of cells that covers and protects the root tip of plants. Also called calyptra The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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