internal clock

noun

1

: a system in the body that controls when a person needs to sleep, eat, etc.

The long trip upset my internal clock and I had a hard time getting to sleep.

2

: a clock or timing device that is inside a computer

Examples of internal clock in a Sentence

Recent Examples on the Web

Herzog said clock changes disrupt circadian rhythms, the body's internal clock that regulates sleep and other biological functions. — Saman Shafiq, USA Today, 31 July 2026

Usually, environmental cues such as sunrises and sunsets help set your internal clock. — Laura Ungar, Chicago Tribune, 25 July 2026

Circadian scores translate your body’s 24-hour internal clock into a daily readout, and a wave of rings, pendants and apps is racing to make that clock visible on your wrist. — Hanna Wickes, Sacbee.com, 21 July 2026

Circadian scores attempt to quantify how well your daily behaviors, including light exposure, meal timing, activity, and sleep-wake patterns, are keeping that internal clock in sync with the outside world. — Hanna Wickes, Charlotte Observer, 21 July 2026

Rhymes for internal clock

• electroshock
• aftershock
• antiknock
• arawak
• hollyhock
• interlock
• manioc
• shuttlecock
• tomahawk
• weathercock
• alcock
• beanstalk