catarrh (n.)

"disease characterized by inflammation of, and discharge from, a mucous membrane; a cold in the head or chest," late 14c., from Medieval Latin catarrus, from Late Latin catarrhus, from Greek katarrhous "a catarrh, a head cold," literally "a flowing down," earlier kata rrhoos, ultimately from kata "down" (see cata-) + rhein "to flow" (from PIE root *sreu- "to flow"). Related: Catarrhal; catarrhous.

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