单词 | gemma |
释义 | gemma[ jem-uh ] / ˈdʒɛm ə / noun, plural gem·mae [jem-ee]. /ˈdʒɛm i/.a bud. Botany. a cell or cluster of cells, or a leaflike or budlike body, that separates from the parent plant to form a new organism, as in mosses and liverworts. Origin of gemma1760–70; <Latin: bud, gem Words nearby gemmaGeminid, Geminids, geminiflorous, Gemini telescope, gem iron, gemma, gemmaceous, gemmate, gemmation, gemmiferous, gemmiform Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for gemmaBritish Dictionary definitions for gemmagemma / (ˈdʒɛmə) / noun plural -mae (-miː)a small asexual reproductive structure in liverworts, mosses, etc, that becomes detached from the parent and develops into a new individual zoology another name for gemmule (def. 1) Derived forms of gemmagemmaceous (dʒɛˈmeɪʃəs), adjectiveWord Origin for gemmaC18: from Latin: bud, gem 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 gemmagemma [ jĕm′ə ] Plural gemmae (jĕm′ē′)A budlike mass of undifferentiated tissue which serves as a means of vegetative reproduction among mosses and liverworts. The gemmae, often formed in structures called gemma cups, are usually dispersed from the parent plant by the splashing of raindrops, after which they develop into new individuals. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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