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Having no distinct; without sexual action; as, asexual reproduction. See Fission and Gemmation.

The act or process of sterilizing an animal or human being, as by vasectomy.

In an asexual manner; without sexual agency.

Reproduction without the union of parents of distinct sexes: asexual reproduction.

Having no visible sexual organs; asexual. In Bot., cryptogamous.

Producing only asexual individuals, as the eggs of certain annelids.

A process of asexual reproduction, in which a new organism or cell is formed by a protrusion of a portion of the animal or vegetable organism, the bud thus formed sometimes remaining attached to the parent stalk or cell, at other times becoming free; gemmation. See Hydroidea.

The faculty of multiplying in two ways; -- by ova fecundated by spermatic fluid, and asexually, as by buds. See Parthenogenesis.

Sexless; asexual.

A method of asexual reproduction among the lowest (unicellular) organisms by means of a process of self-division, consisting of gradual division or cleavage of the into two parts, each of which then becomes a separate and independent organisms; as when a cell in an animal or plant, or its germ, undergoes a spontaneous…

he formation of a new individual, either animal or vegetable, by a process of budding; an asexual method of reproduction; gemmulation; gemmiparity. See Budding.

rthenogenetic generation, alternate; -- in distinction from metagenesis, where sexual and asexual generations alternate. Claus & Sedgwick.

Alternation of sexual and asexual or gemmiparous generations; - - in distinction from heterogamy.

on by fission or in the formation of buds, etc., which drop off and form new individuals; asexual reproduction. Haeckel.

Of or pertaining to monogenesis; as, monogenous, or asexual, reproduction.

A peculiar larva of certain trematodes which produces cercariæ by asexual reproduction. See Cercaria, and Redia.

An asexual form from which the true embryo is produced by budding.

kind of larva, or nurse, which is prroduced within the sporocyst of certain trematodes by asexual generation. It in turn produces, in the same way, either another generation of rediæ, or else cercariæ within its own body. Called also proscolex, and nurse. See Illustration in Appendix.

One of the asexual polymorphic forms of white ants, or termites, in which the head and jaws are very large and strong. The soldiers serve to defend the nest. See Termite. Soldier beetle (Zoöl.), an American carabid beetle (Chauliognathus Americanus) whose larva feeds upon other insects, such as the plum curculio. -- S…

An asexual zooid, usually forming one of a series of larval forms in the agamic reproduction of various trematodes and other parasitic worms. The sporocyst generally develops from an egg, but in its turn produces other larvæ by internal budding, or by the subdivision of a part or all of its contents into a number of mi…