Definition of sinusitis
: inflammation of a sinus of the skull
Recent Examples of sinusitis from the Web
In the course of her investigation, a host of alternate infections have emerged: not just strep, but bacterial mycoplasma, influenza, sinusitis, pneumonia and others.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sinusitis.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of sinusitis
SINUSITIS Defined for English Language Learners
Definition of sinusitis for English Language Learners
medical : painful swelling of the tissues inside the sinuses
Seen and Heard
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