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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..

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

Parthenogenesis :: Parthenogenesis (n.) The production of seed without fertilization, believed to occur through the nonsexual formation of an embryo extraneous to the embrionic vesicle..

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..

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..

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

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..

Female :: Female (a.) Having pistils and no stamens; pistillate; or, in cryptogamous plants, capable of receiving 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..

Warp :: Warp (v. t.) To let the tide or other water in upon (lowlying land), for the purpose of fertilization, by a deposit of warp, or slimy substance..

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..

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

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..

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

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

Autogamy :: Autogamy (n.) Self-fertilization, the fertilizing pollen being derived from the same blossom as the pistil acted upon..

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

Xenogamy :: Xenogamy (n.) Cross fertilization.

Polyembryony :: Polyembryony (n.) The production of two or more embryos in one seed, due either to the existence and fertilization of more than one embryonic sac or to the origination of embryos outside of the embryonic sac..

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..

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