Sinusitis (noun)

Inflammation of the sinuses, typically caused by infection or allergy.

Origin:

From new latin sinusītis, from latin sinus ("a bend, fold, curve, bay, hollow, or bosom") + -ītis.

Examples:

1. The patient had been suffering from sinusitis for several weeks.
2. The sinusitis was caused by a bacterial infection.
3. He was prescribed antibiotics to treat his sinusitis.
4. Sinusitis can cause headaches and facial pain.
5. Chronic sinusitis can lead to a loss of sense of smell.