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sinusitis

noun

  1. inflammation of the mucous membrane that lines the sinuses resulting in symptoms
L327833 on Wikidata ↗

Wiktionary

noun

Etymology: Etymology tree English sinus Proto-Indo-European *-tósder. Ancient Greek -της (-tēs)der. Ancient Greek -ῖτις (-îtis)lbor. New Latin -itisder. English -itis English sinusitis From sinus + -itis.

  1. An inflammation of one or more paranasal sinuses.