'Seasonal dimorphism' definitions:

Definition of 'Seasonal dimorphism'

From: GCIDE
  • Seasonal \Sea"son*al\, a.
  • 1. Of or pertaining to the seasons. [1913 Webster]
  • 2. Occurring or being used in a specific season; as, seasonal items for sale. [1913 Webster]
  • Seasonal dimorphism (Zool.), the condition of having two distinct varieties which appear at different seasons, as certain species of butterflies in which the spring brood differs from the summer or autumnal brood. [1913 Webster]