Pronunciation change

  • IPA (key): /ɑː(r)θˈr(a)ɪtɪs/
  • (file)

Noun change

Singular
arthritis

Plural
arthritides

  1. (countable & uncountable) Arthritis is a disease that causes inflammation of a person's bone or body joint. It can cause pain, swelling, and stiffness and it is a condition that lasts for a long time.