homologue

[hoh-muh-lawg, -log, hom-uh-] /ˈhoʊ məˌlɔg, -ˌlɒg, ˈhɒm ə-/
noun
1.
something homologous.
2.
Chemistry. any member of a homologous series of organic compounds:
Ethane is a homologue of the alkane series.
Also, homolog.
Origin
1840-50; < French < Greek homólogon, neuter of homólogos homologous
British Dictionary definitions for homologue

homologue

/ˈhɒməˌlɒɡ/
noun
1.
(biology) a homologous part or organ
2.
(chem) any homologous compound
homologue in Medicine

homologue ho·mo·logue or hom·o·log (hŏm'ə-lôg', hō'mə-)
n.
Something homologous, as an organ or part.

homologue in Science
homologue or homolog
  (hŏm'ə-lôg', hō'mə-)   

  1. A homologous organ or part.

  2. A homologous chromosome.

  3. A homologous chemical compound. Compare analog.