Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

arthritis

play
noun ar·thri·tis \är-ˈthrī-təs\

Simple Definition of arthritis

  • medical : a disease that causes the joints of the body to become swollen and painful

Source: Merriam-Webster's Learner's Dictionary

Full Definition of arthritis

plural

arthritides

play \-ˈthri-tə-ˌdēz\
  1. :  inflammation of joints due to infectious, metabolic, or constitutional causes; also :  a specific arthritic condition

Origin and Etymology of arthritis

Latin, from Greek, from arthron


First Known Use: 1543


ARTHRITIS Defined for Kids

arthritis

play
noun ar·thri·tis \är-ˈthrī-təs\

Definition of arthritis for Students

  1. :  a condition in which the joints are painful and swollen




Medical Dictionary

arthritis

play
noun ar·thri·tis \är-ˈthrīt-əs\

Medical Definition of arthritis

plural

arthrithritides

\-ˈthrit-ə-ˌdēz\play
  1. :  inflammation of joints due to infectious, metabolic, or constitutional causes; also :  a specific arthritic condition (as gouty arthritis or psoriatic arthritis)





Seen and Heard

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

WORD OF THE DAY

a very small amount

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alphabet-pasta-spelling-help

Which is the correct spelling?

acommadate accomodate acommodate accommodate
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