hay fever: Meaning and Definition of

hay' fe"ver

Pronunciation: [key]
— Pathol. Pathol.
  1. a type of allergic rhinitis affecting the mucous membranes of the eyes and respiratory tract, affecting susceptible persons usually during the summer, caused by pollen of ragweed and certain other plants.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.