sinusitis

noun

si·​nus·​i·​tis ˌsīn-yə-ˈsī-təs 

ˌsī-nə-

: inflammation of a sinus of the skull

Examples of sinusitis in a Sentence

Recent Examples on the Web

These include allergic bronchopulmonary aspergillosis (ABPA), allergic aspergillosis sinusitis, chronic pulmonary aspergillosis ICPA) and aspergilloma, also known as fungus ball, according to the CDC. —Hollie Silverman, MSNBC Newsweek, 11 May 2025

Inflammation and pressure from sinusitis can affect nearby structures, including the inner ear. —Lindsay Curtis, Health, 25 Apr. 2025

The gentle formula flushes out irritants and moisturizes dry nasal passages related to allergies, colds, flu, and sinusitis. —Nora Colomer, FOXNews.com, 5 Apr. 2025

Some people have recurring sinusitis, four or more episodes of acute sinusitis in the same year.4 Share Some Treatments While some treatments are specific to each condition, the two share some options. —Sarah Hudgens, Health, 5 Apr. 2025

Word History

First Known Use

1896, in the meaning defined above

Rhymes for sinusitis

• adenitis
• arteritis
• blepharitis
• cervicitis
• cholangitis
• choroiditis
• decubitus
• dermatitis
• fasciitis
• gingivitis
• hepatitis
• iritis

Kids Definition

sinusitis

noun

si·​nus·​itis

ˌsī-n(y)ə-ˈsīt-əs

: inflammation of a sinus

Medical Definition

sinusitis

noun

si·​nus·​itis ˌsī-n(y)ə-ˈsīt-əs 

: inflammation of a sinus of the skull