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biological clock

see definition of biological clock
  • nouninternal clock
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Synonyms for biological clock

noun internal clock
  • circadian rhythm
  • biological rhythm
  • biorhythm
  • body clock
  • circadian clock
  • cycles

More words related to biological clock

life cycle

noun. processes of lifeform
  • biological clock
  • biorhythm
  • circuition
  • life process
  • wheel of life
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.