Defn: Passing through the different stages in its life history on an alternation of hosts, as the common wheat-rust fungus (Puccinia graminis), and certain other parasitic fungi; — contrasted with autocious. — Het`er*o"cism (#), n.
HETEROGAMOUS Het`er*og"a*mous, a. Etym: [Hetero- + Gr. ga`mos marriage: cf. F. hétérogame.] (Bot. & Biol.) (a) The condition of having two or more kinds of flowers which differ in regard to stamens and pistils, as in the aster. (b) Characterized by heterogamy.
HETEROGAMY
Het`er*og"a*my, n. Etym: [See Heterogamous.]
1. (Bot.)
Defn: The process of fertilization in plants by an indirect or circuitous method; — opposed to orthogamy.
2. (Biol.)
Defn: That form of alternate generation in which two kinds of sexual generation, or a sexual and a parthenogenetic generation, alternate; — in distinction from metagenesis, where sexual and asexual generations alternate. Claus & Sedgwick.
HETEROGANGLIATE
Het`er*o*gan"gli*ate, a. Etym: [Hetero- + gangliate.] (Physiol.)
Defn: Having the ganglia of the nervous system unsymmetrically arranged; — said of certain invertebrate animals.
HETEROGENE
Het"er*o*gene, a.