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Origin and history of -itis

-itis

word-forming element in medicine denoting "diseases characterized by inflammation" (of the specified part), Modern Latin, from Greek -itis, feminine of adjectival suffix -ites "pertaining to." Feminine because it was used with an implied nosos "disease," a feminine noun; especially in arthritis (nosos) "(disease) of the joints." Arthritis (16c.) was one of the earliest appearances of the suffix in English and from it the suffix was abstracted in other uses.

Entries linking to -itis

"inflammation of a joint," 1540s, from medical Latin arthritis, from Greek (nosos) arthritis "(disease) of the joints," from arthritis, fem. of arthritēs (adj.) "pertaining to joints" (Greek nosos is a fem. noun), from arthron "a joint" (from PIE root *ar- "to fit together"). The older noun form was arthetica (late 14c.).

"inflammation of the vermiform appendix," 1886, from Latin stem of appendix, in the medical sense, + -itis "inflammation."

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