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Parthenogenesis :: Parthenogenesis (n.) The production of new individuals from virgin females by means of ova which have the power of developing without the intervention of the male element; the production, without fertilization, of cells capable of germination. It is one of the phenomena of alternate generation. Cf. Heterogamy, and Metagenesis..

Fertilization :: Fertilization (n.) The act or process of rendering fertile.

Superfecundity :: Superfecundation (n.) Fertilization of two ova, at the same menstruation, by two different acts of coition..

Allogamy :: Allogamy (n.) Fertilization of the pistil of a plant by pollen from another of the same species; cross-fertilization.

Proembryo :: Proembryo (n.) The series of cells formed in the ovule of a flowering plant after fertilization, but before the formation of the embryo..

Grossification :: Grossification (n.) The swelling of the ovary of plants after fertilization. Henslow.

Orthogamy :: Orthogamy (n.) Direct fertilization in plants, as when the pollen fertilizing the ovules comes from the stamens of the same blossom; -- opposed to heterogamy..

Hectocotylus :: Hectocotylus (n.) One of the arms of the male of most kinds of cephalopods, which is specially modified in various ways to effect the fertilization of the eggs. In a special sense, the greatly modified arm of Argonauta and allied genera, which, after receiving the spermatophores, becomes detached from the male, and attaches itself to the female for reproductive purposes..

Geitonogamy :: Geitonogamy (n.) Fertilization of flowers by pollen from other flowers on the same plant.

Fertilization :: Fertilization (n.) The act of fecundating or impregnating animal or vegetable germs; esp., the process by which in flowers the pollen renders the ovule fertile, or an analogous process in flowerless plants; fecundation; impregnation..

Oospore :: Oospore (n.) A special kind of spore resulting from the fertilization of an oosphere by antherozoids.

Fecundation :: Fecundation (n.) The act by which, either in animals or plants, material prepared by the generative organs the female organism is brought in contact with matter from the organs of the male, so that a new organism results; impregnation; fertilization..

Cleistogamous :: Cleistogamous (a.) Having, beside the usual flowers, other minute, closed flowers, without petals or with minute petals; -- said of certain species of plants which possess flowers of two or more kinds, the closed ones being so constituted as to insure self-fertilization..

Male :: Male (v. t.) Capable of producing fertilization, but not of bearing fruit; -- said of stamens and antheridia, and of the plants, or parts of plants, which bear them..

Hercogamous :: Hercogamous (a.) Not capable of self-fertilization; -- said of hermaphrodite flowers in which some structural obstacle forbids autogamy.

Carpophyte :: Carpophyte (n.) A flowerless plant which forms a true fruit as the result of fertilization, as the red seaweeds, the Ascomycetes, etc..

Impregnation :: Impregnation (n.) The fusion of a female germ cell (ovum) with a male germ cell (in animals, a spermatozoon) to form a single new cell endowed with the power of developing into a new individual; fertilization; fecundation..

Intercross :: Intercross (n.) The process or result of cross fertilization between different kinds of animals, or different varieties of plants..

Heterogamy :: Heterogamy (n.) The process of fertilization in plants by an indirect or circuitous method; -- opposed to orthogamy.

Spermatozoid :: Spermatozoid (n.) The male germ cell in animals and plants, the essential element in fertilization; a microscopic animalcule-like particle, usually provided with one or more cilia by which it is capable of active motion. In animals, the familiar type is that of a small, more or less ovoid head, with a delicate threadlike cilium, or tail. Called also spermatozoon. In plants the more usual term is antherozoid..

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