homologous

The definition of homologous is having the same evolutionary origin, position or structure.

(adjective)

The wing structure of a bird and the arm structure of a man are an example of things that arehomologous.

See homologous in Webster's New World College Dictionary

adjective

corresponding in structure, position, character, etc.
Biol. corresponding in basic type of structure and deriving from a common primitive origin: the wing of a bat and the foreleg of a mouse are homologous
Chem.
1. designating or of a series of compounds each member of which has a structure differing regularly by some increment (as a CH group) from that of the adjacent members
2. having this relation with another or other compounds of such a series
3. designating or of a series of elements in the same group or period of the periodic table, as the halogens, actinides, etc.
Immunology
1. of a serum given to and derived from the same species
2. of a serum given to another species but for fighting the same bacterium
Med. homoplastic (sense )

Origin: Gr homologos, agreeing < homos, same + legein, say: see logic

See homologous in American Heritage Dictionary 4

adjective

Corresponding or similar in position, value, structure, or function.
Biology Similar in structure and evolutionary origin, though not necessarily in function, as the flippers of a seal and the hands of a human.
Immunology Relating to the correspondence between an antigen and the antibody produced in response to it.
Genetics Having the same morphology and linear sequence of gene loci as another chromosome.
Chemistry Belonging to or being a series of organic compounds each successive member of which differs from the preceding member by a constant increment, especially by an added CH₂ group.

Origin:

Origin: From Greek homologos, agreeing

Origin: : homo-, homo-

Origin: + logos, word, proportion; see leg- in Indo-European roots

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