Medical Definition of itis
: a disease characterized by inflammation <arthritis, tendinitis and all those other itises—Sports Illustrated>
Medical Definition of -itis
plural -i·tis·es also -it·i·des \ˈit-ə-ˌdēz\ or -i·tes
: disease usually inflammatory of a (specified) part or organ : inflammation of <laryngitis> <appendicitis> <bronchitis>
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