What is "orthology"

Orthology \Or*thol"o*gy\, n. [Gr. ?; 'orqo`s right + lo`gos speech, description: cf. F. orthologie.] The right description of things. [R.]
--Fotherby.

n. correct speaking or the correct use of words.

Orthology may refer to:

• Orthology (biology) - homologous sequences descended from the same ancestral sequence for which function of the gene or sequence has been conserved across evolutionary time.
• Orthology (language) - the study of the correct use of words.

Orthology is the study of the right use of words in language. The word comes from Greek ortho- ("correct") and -logy ("science of"). This science is a place where psychology, philosophy, linguistics, and many other fields of learning come together. The most noted use of Orthology is for the selection of words for the language of Basic English by the Orthological Institute.

The book, The Meaning of Meaning, by C.K. Ogden and I.A. Richards, is an important book dealing with orthology. The term Orthology comes from the book The Grammar of Science by Karl Pearson.