WordWeb Online

1. The torpid or resting state in which some animals pass the winter
    
2. Cessation from or slowing of activity during the winter; especially slowing of metabolism in some animals
    
3. The act of retiring into inactivity
   "he emerged from his hibernation to make his first appearance in several years"

Derived forms: hibernations

See also: hibernate

Type of: dormancy, quiescence, quiescency, retirement, torpidity, torpor

Encyclopedia: Hibernation