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Origin and history of normal

normal(adj.)

c. 1500, "typical, common;" 1640s, in geometry, "standing at a right angle, perpendicular," from Late Latin normalis "in conformity with rule, normal," in classical Latin "made according to a carpenter's square," from norma "rule, pattern," literally "carpenter's square," a word of unknown origin (see norm). Meaning "conforming to common standards or established order or usage, regular, usual" is attested from 1828 but probably is older than the record [Barnhart].

Meaning "heterosexual" is by 1914. As a noun meaning "usual state or condition," from 1890 (in geometry as "a perpendicular" from 1727). Sense of "a normal person or thing" is attested by 1894. Normal school "training college for teachers" (1835) is a translation of French école normale (1794), a creation of the French Republic; the notion is of "serving to set a standard." The U.S. city of Normal, Illinois, was named 1857 for the normal school established there.

Entries linking to normal

"a standard, pattern, or model," 1821 (Coleridge), from French norme, from Latin norma "carpenter's square, rule, pattern," a word of unknown origin. Klein suggests a borrowing (via Etruscan) of Greek gnōmōn "carpenter's square." The Latin form of the word, norma, was used in English in the sense of "carpenter's square" from 1670s, also as the name of a small, faint southern constellation introduced 18c. by La Caille.

1868, from normal (in reference to molecular structure) + epinephrine.

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