sinusitis

play
noun si·nus·i·tis \ˌsīn-yə-ˈsī-təs, ˌsī-nə-\

Definition of sinusitis

  1. :  inflammation of a sinus of the skull

1896

First Known Use of sinusitis

1896


SINUSITIS Defined for English Language Learners

sinusitis

play
noun si·nus·i·tis \ˌsīn-yə-ˈsī-təs, ˌsī-nə-\

Definition of sinusitis for English Language Learners

  • medical : painful swelling of the tissues inside the sinuses


Medical Dictionary

sinusitis

play
noun si·nus·itis \ˌsī-n(y)ə-ˈsīt-əs\

Medical Definition of sinusitis

  1. :  inflammation of a sinus of the skull


Learn More about sinusitis


Seen and Heard

What made you want to look up sinusitis? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a harsh rebuke

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • hot-dog--hot-dog--hot-dog--hot-dog-cat
  • Which of the following words is not a synonym for ‘a young person’?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ