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[jem-uh] /ˈdʒɛm ə/
noun, plural gemmae
[jem-ee] /ˈdʒɛm i/ (Show IPA)
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 gemma
1760-70; < Latin: bud, gem Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for gemma
Contemporary Examples
Historical Examples
  • It was here that gemma had run up to him with her vivid face, her outstretched hands.

    The Gadfly E. L. Voynich
  • Can gemma then be the lady of the window, his love for whom Dante so contemns?

  • When he could prevail upon gemma to come he always felt that the evening would be a success.

    The Gadfly E. L. Voynich
  • "So it's the Gadfly," thought gemma, looking at him with some curiosity.

    The Gadfly E. L. Voynich
  • gemma stood up and pushed back the boughs of the pomegranate tree.

    The Gadfly E. L. Voynich
British Dictionary definitions for gemma


noun (pl) -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 (sense 1)
Derived Forms
gemmaceous (dʒɛˈmeɪʃəs) adjective
Word Origin
C18: 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
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gemma in Science
Plural gemmae (jěm'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 © 2002. Published by Houghton Mifflin. All rights reserved.
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