Definitions

from The Century Dictionary.

  • noun In zoology, the maturation in hermaphroditic animals of the ova and sperm at different times so as to preclude self-fertilization.
  • noun In botany, a provision in hermaphrodite flowers to prevent self-fertilization by a difference in the time of maturity of the anthers and Stigma.

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

  • noun (Bot.) The condition of certain species of plants, in which the stamens and pistil do not mature simultaneously, so that these plants can never fertilize themselves.

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

  • noun biology The condition in which an organism changes sex during its lifetime.

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