Definition of urticaria noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌɜːtɪˈkeəriə//
; NAmE NAmE//ˌɜːrtɪˈkeriə//
(also nettlerash, hives) [uncountable] (medical)
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red spots on the skin that itch (= make you want to scratch), caused by an allergic reaction, for example to certain foods Word Originlate 18th cent.: modern Latin, from Latin urtica ‘nettle’, from urere ‘to burn’.
See the Oxford Advanced American Dictionary entry: urticaria