SINUSITIS
Meaning of SINUSITIS in English
si ‧ nus ‧ i ‧ tis /ˌsaɪnəˈsaɪtəs, ˌsaɪnəˈsaɪtɪs/ BrE AmE noun [uncountable]
a condition in which your sinuses swell up and become painful
Longman Dictionary of Contemporary English.
Longman - Словарь современного английского языка.
2012