orthology1
/ɔːˈθɒlədʒi/noun
Correct, approved, or traditional use of language; (formerly also) the branch of grammar which deals this. Now rare.
Origin
Early 17th century; earliest use found in Martin Fotherby (c1560–1620), bishop of Salisbury. From ancient Greek ὀρθολογία correctness of language from ὀρθο- ortho- + -λογία -logy.
orthology2
/ɔːˈθɒlədʒi/Molecular Biol.
noun
The condition of being orthologous.
Origin
1970s; earliest use found in Systematic Zoology. From ortho- + -logy, after orthologous.