Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Inflammation of the sinuses or a sinus, especially in the nasal region.

from The Century Dictionary.

  • noun Inflammation of any sinus, whether an air-sinus or a sinus of the dura mater.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun pathology An inflammation of the paranasal sinuses.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun inflammation of one of the paranasal sinuses

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From sinus +‎ -itis.

Examples

  • Short-term sinusitis can be caused by either a bacterial infection, which may respond to treatment with antibiotics, or a viral infection, which doesn't.

    Waiting It Out: Antibiotics

  • What typically happens is the chicken may develop sinusitis, which is just inflammation of the sinuses.

    CNN Transcript May 23, 2006

  • Rhinosinusitis, also called sinusitis, is an inflammation or swelling of the lining in the sinus cavities.

    innovations-report

  • People with allergies are more likely to develop sinusitis, which is most common in the winter months.

    Medlogs - Recent stories

  • People with allergies are more likely to develop sinusitis, which is most common in the winter months.

    Medlogs - Recent stories

  • Untreated, allergies can also lead to infection of the sinuses (called sinusitis) and nasal polyps.

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  • People with allergies are more likely to develop sinusitis, which is most common in the winter months.

    Medlogs - Recent stories

  • People with allergies are more likely to develop sinusitis, which is most common in the winter months.

    Medlogs - Recent stories

  • See your doctor if bad breath persists, which can signal illness, such as sinusitis, tonsillitis, and some lung or stomach problems.

    Tip of the day: Banish bad breath

  • See your doctor if bad breath persists, which can signal illness, such as sinusitis, tonsillitis, and some lung or stomach problems.

    Tip of the day: Banish bad breath

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