| Main Entry: | biological clock |
| Part of Speech: | noun |
| Definition: | internal clock |
Synonyms: |
biological rhythm, biorhythm, body clock, circadian clock, circadian rhythm, cycles |
| Main Entry: | body clock |
| Part of Speech: | noun |
| Definition: | biological clock |
Synonyms: |
biological rhythm, biorhythm, circadian clock, circadian rhythm, internal clock |