HETEROLOGOUS
Het`er*ol"o*gous, a. Etym: [Hetero- + Gr.
Defn: Characterized by heterology; consisting of different elements, or of like elements in different proportions; different; — opposed to homologous; as, heterologous organs. Heterologous stimulus. (Physiol.) See under Stimulus. — Heterologous tumor (Med.), a tumor differing in structure from the normal tissues of the body.
HETEROLOGY
Het`er*ol"o*gy, n. Etym: [Hetero- + -logy.]
1. (Biol.)
Defn: The absence of correspondence, or relation, in type of structure; lack of analogy between parts, owing to their being composed of different elements, or of like elements in different proportions; variation in structure from the normal form; — opposed to homology.
2. (Chem.)
Defn: The connection or relation of bodies which have partial identity of composition, but different characteristics and properties; the relation existing between derivatives of the same substance, or of the analogous members of different series; as, ethane, ethyl alcohol, acetic aldehyde, and acetic acid are in heterology with each other, though each in at the same time a member of a distinct homologous series. Cf. Homology.
HETEROMERA
Het`e*rom"e*ra, n. pl. Etym: [NL., fr. Gr. (Zoöl.)
Defn: A division of Coleoptera, having heteromerous tarsi.
HETEROMEROUS
Het`er*om"er*ous, a. Etym: [See Heteromera.]