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

There’s the brutal heat; the skin destroying UV-rays of that miserable, scorching, eye-blinding sun; the constant allergy/sinusitis issues that NEVER let up; the smothering humidity. — R. Eric Thomas, Washington Post, 8 Oct. 2026

There’s the brutal heat; the skin-destroying UV rays of that miserable, scorching, eye-blinding sun; the constant allergy/sinusitis issues that never let up; the smothering humidity. — Eric Thomas, Sun Sentinel, 8 Oct. 2026

Especially for those who lack access to primary care, treating simple health problems like sinusitis and pink eye with AI should, in theory, keep people healthier, while reducing stress on the medical system. — Amy Feldman, Forbes.com, 23 Mar. 2026

However, upper respiratory infections — not only COVID, but also flu, colds and sinusitis — can disrupt these receptors. — Adam Cohen, Oklahoman, 10 Mar. 2026

Word History

First Known Use

1896, in the meaning defined above

Rhymes for sinusitis

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

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