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oogonium

[ oh-uh-goh-nee-uhm ]

noun

, Biology.
, plural o·o·go·ni·a [oh-, uh, -, goh, -nee-, uh], o·o·go·ni·ums.
  1. one of the undifferentiated germ cells giving rise to oocytes.
  2. the one-celled female reproductive organ in certain thallophytes, usually a more or less spherical sac containing one or more eggs.


oogonium

/ ˌəʊəˈɡəʊnɪəm /

noun

  1. an immature female germ cell forming oocytes by repeated divisions
  2. a female sex organ of some algae and fungi producing female gametes (oospheres)
“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


oogonium

/ ō′ə-gōnē-əm /

, Plural oogonia

  1. A female reproductive structure in certain algae and fungi. It is usually a rounded cell or sac containing one or more oospheres.
  2. A cell that arises from a primordial germ cell and differentiates into an oocyte in the ovary of female animals.


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Derived Forms

  • ooˈgonial, adjective
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Other Words From

  • oo·goni·al adjective
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Word History and Origins

Origin of oogonium1

From New Latin, dating back to 1865–70; oo-, -gonium
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Example Sentences

It is seldom that more than one antheridium applies itself to an oogonium.

Mycelium present, antheridia with antherozoids, oogonium with single oosphere: Monoblepharidaceae.

Oogonium with the central uninucleate oosphere and the fertilizing tube (a) of the antheridium which introduces the male nucleus.

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