vasculitisPronunciation: /ˌvaskjʊˈlʌɪtɪs/Definition of vasculitis noun (plural vasculitides /-ˈlʌɪtɪdiːz/) [mass noun] Medicine inflammation of a blood vessel or blood vessels: [mass noun]: there is no evidence of vasculitis [count noun]:symptoms suggestive of a systemic vasculitisDerivatives vasculiticPronunciation: /-ˈlɪtɪk/ adjective vasculitis in other Oxford dictionaries Definition of vasculitis in the US English dictionary