Medical Dictionary


noun ho·mol·o·gy \hō-ˈmäl-ə-jē, hə-\
plural ho·mol·o·gies

Medical Definition of HOMOLOGY

a :  likeness in structure between parts of different organisms due to evolutionary differentiation from the same or a corresponding part of a remote ancestor—compare analogy, homomorphy b :  correspondence in structure between different parts of the same individual
a :  the relation existing between chemical compounds in a series whose successive members have in composition a regular difference especially of one carbon and two hydrogen atoms CH2 b :  the relation existing among elements in the same group of the periodic table c :  similarity of nucleotide or amino acid sequence (as in nucleic acids or proteins)


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