Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A nonmotile female gamete formed in the oogonium of an alga, fungus, oomycete, or bryophyte.

from The Century Dictionary.

  • noun In cryptogams, the naked nucleated spherical or ovoid mass of protoplasm in the center of the oögonium, which after fertilization develops the oöspore.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Bot.) An unfertilized, rounded mass of protoplasm, produced in an oögonium.
  • noun (Bot.) An analogous mass of protoplasm in the ovule of a flowering plant; an embryonic vesicle.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun botany A large nonmotile egg cell formed in an oogonium and ready for fertilization

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a gamete; used especially of lower plants

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

oo- +‎ sphere

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Examples

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  • Oo!

    July 25, 2008