
1) Plant organ
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https://www.crosswordclues.com/clue/archegonium

An archegonium (pl: archegonia), from the ancient Greek ἀρχή (`beginning`) and γόνος (`offspring`), is a multicellular structure or organ of the gametophyte phase of certain plants, producing and containing the ovum or female gamete. The corresponding male organ is called the antheridium. The archegonium has a long neck canal or vent...
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http://en.wikipedia.org/wiki/Archegonium

• (n.) The pistillidium or female organ in the higher cryptogamic plants, corresponding to the pistil in flowering plants.
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http://thinkexist.com/dictionary/meaning/archegonium/

the female reproductive organ in ferns and mosses. An archegonium also occurs in some gymnosperms, e.g., cycads and conifers. A flask-shaped ... [9 related articles]
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http://www.britannica.com/eb/a-z/a/95

<plant biology> The structure on the pteridophyte prothallus that produces the sessile female gametes. ... Compare: antheridium. ... (09 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973

Female sex organ of liverworts, mosses, ferns and most gymnosperms.
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http://www.encyclo.co.uk/visitor-contributions.php
Ar`che·go'ni·um noun [ New Latin , from Greek ... the first of a race.]
(Botany) The pistillidium or female organ in the higher cryptogamic plants, corresponding to the pistil in flowering plants.
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http://www.encyclo.co.uk/webster/A/115

The organ on a gametophyte plant which produces the egg cell, and nurtures the young sporophyte.
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http://www.ucmp.berkeley.edu/glossary/gloss8botany.html

The organ on a gametophyte plant which produces the egg cell, and nurtures the young sporophyte.
Found on
http://www.ucmp.berkeley.edu/glossary/glossary_8.html

[
n] - a female sex organ occurring in mosses, ferns, and most gymnosperms
Found on
http://www.webdictionary.co.uk/definition.php?query=archegonium

archegonium A multicellular, often flask-shaped, egg-producing organ occurring in mosses, ferns, and most gymnosperms.
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http://www.wordinfo.info/words/index/info/view_unit/179/3
noun a female sex organ occurring in mosses, ferns, and most gymnosperms
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https://www.encyclo.co.uk/local/20974

the female reproductive organ in ferns, mosses, etc.
Found on
https://www.infoplease.com/dictionary/archegonium
No exact match found.