Homologous

[huh-mol-uh-guh s, hoh-] /həˈmɒl ə gəs, hoʊ-/

adjective
1.
having the same or a similar relation; corresponding, as in relative position or structure.
2.
corresponding in structure and in origin, but not necessarily in function:
The wing of a bird and the foreleg of a horse are homologous.
3.
having the same alleles or genes in the same order of arrangement:
homologous chromosomes.
4.
Chemistry. of the same chemical type, but differing by a fixed increment of an atom or a constant group of atoms:
Methyl and ethyl alcohols are homologous.
5.
Immunology. pertaining to an antigen and its specific antibody.
/həʊˈmɒləɡəs; hɒ-/
adjective
1.
having a related or similar position, structure, etc
2.
(chem) (of a series of organic compounds) having similar characteristics and structure but differing by a number of CH2 groups
3.
(med)

4.
(biology) (of organs and parts) having the same evolutionary origin but different functions: the wing of a bat and the paddle of a whale are homologous Compare analogous (sense 2)
5.
(maths) (of elements) playing a similar role in distinct figures or functions
adj.

1650s, from Greek homologos “agreeing, of one mind,” from homos “same” (see homo- (1)) + logos “relation, reasoning, computation,” related to legein “reckon, select, speak” (see lecture (n.)).

homologous ho·mol·o·gous (hə-mŏl’ə-gəs, hō-)
adj.

homologous
(hə-mŏl’ə-gəs)