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archegonium

[ahr-ki-goh-nee-uh m] /ˌɑr kɪˈgoʊ ni əm/
noun, plural archegonia
[ahr-ki-goh-nee-uh] /ˌɑr kɪˈgoʊ ni ə/ (Show IPA).
Botany
1.
the female reproductive organ in ferns, mosses, etc.
Origin
1850-1855
1850-55; < New Latin, equivalent to archegon- (< Greek archégonos first of a race; see arche-, gono-) + -ium < Greek -ion diminutive suffix
Related forms
archegonial, archegoniate
[ahr-ki-goh-nee-it, -eyt] /ˌɑr kɪˈgoʊ ni ɪt, -ˌeɪt/ (Show IPA),
adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for archegonium

archegonium

/ˌɑːkɪˈɡəʊnɪəm/
noun (pl) -nia (-nɪə)
1.
a female sex organ, occurring in mosses, spore-bearing vascular plants, and gymnosperms, that produces a single egg cell in its swollen base
Derived Forms
archegoniate, adjective
Word Origin
C19: from New Latin, from Greek arkhegonos original parent, from arkhe- chief, first + gonos seed, race
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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archegonium in Science
archegonium
  (är'kĭ-gō'nē-əm)   
Plural archegonia
The egg-producing organ occurring in bryophytes (such as mosses and liverworts), ferns, and most gymnosperms. The archegonium is a multicellular, often flask-shaped structure that contains a single egg. Compare antheridium.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for archegonium

archegonia

the female reproductive organ in ferns and mosses. An archegonium also occurs in some gymnosperms, e.g., cycads and conifers. A flask-shaped structure, it consists of a neck, with one or more layers of cells, and a swollen base-the venter-which contains the egg. Neck-canal cells, located above the egg, disappear as the archegonium matures, thus producing a passage for entry of the sperm. The sperm are produced in the corresponding male reproductive organ, the antheridium.

Learn more about archegonia with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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