'Urticaria' definitions:

Definition of 'urticaria'

From: WordNet
noun
An itchy skin eruption characterized by weals with pale interiors and well-defined red margins; usually the result of an allergic response to insect bites or food or drugs [syn: urtication, urticaria, hives, nettle rash]

Definition of 'Urticaria'

From: GCIDE
  • Urticaria \Ur`ti*ca"ri*a\, n. [NL. See Urtica.] (Med.) The nettle rash, a disease characterized by a transient eruption of red pimples and of wheals, accompanied with a burning or stinging sensation and with itching; uredo. [1913 Webster]