Biological sleep Synonyms

Definitions for Biological


  • (adjective) being such by blood and not by adoption or marriage
  • (adjective) pertaining to biology or to life and living things
  • (adjective) of parents and children; related by blood

Definitions for Sleep


  • (noun) a natural periodic loss of consciousness during which the body restores itself
  • (noun) the state of being dead
  • (noun) the permanent stopping of all the vital bodily activities