seasonal dimorphism

1 definition found

seasonal dimorphism - Collaborative International Dictionary of English v.0.48 :

  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]