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Definition of sinusitis

sinusitis

/ˌsaɪ.nəˈsaɪ.tɪs/
si · nu · si · tis
Plural:sinusitides
•
Adjective:sinusitic
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sinusitis Lexical Profile

sinusitis Game Scores & Validity

• noun

1

An inflammation or swelling of the mucous membranes lining the paranasal sinuses, typically caused by a viral, bacterial, or fungal infection, or by allergic reactions.

Example

"The physician prescribed a nasal corticosteroid spray to relieve the patient's chronic sinusitis."

Synonyms
View all synonyms for sinusitis

• Rhymes for sinusitis

• Nearby Words

sinu
sinuously
sinus
sinusitis
sion
sip
siphon

Word Origin & Etymology

Coined in the 19th century in medical Latin from the Latin noun 'sinus' (meaning a curve, fold, or cavity) combined with the Greek-derived suffix '-itis' (denoting inflammation).

Cite this Entry

Wordmom. (2026). Definition of Sinusitis. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/sinusitis
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