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[klahy-stog-uh-muh s] /klaɪˈstɒg ə məs/
adjective, Botany.
pertaining to or having pollination occurring in unopened flowers.
Also, cleistogamic
[klahy-stuh-gam-ik] /ˌklaɪ stəˈgæm ɪk/ (Show IPA)
Compare chasmogamous.
Origin of cleistogamous
1880-85; cleisto- + -gamous
Related forms
cleistogamously, cleistogamically, adverb
cleistogamy, noun
noncleistogamic, adjective
noncleistogamous, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for cleistogamy


self-pollination and fertilization of an unopened flower, as in the flowers of the violet produced in summer Compare chasmogamy
Derived Forms
cleistogamous, cleistogamic (ˌklaɪstəˈɡæmɪk) adjective
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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cleistogamy in Science
Of or relating to a flower that does not open and is self-pollinated in the bud. The fertile flowers of the violet are inconspicuous and cleistogamous, while the plant's more familiar showy flowers are usually infertile.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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