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

Research suggests the body’s circadian rhythm—the internal clock that regulates sleep, hormones, and metabolism—is partly influenced by meal timing. — Trista Chan, HEALTH, 17 Aug. 2026

The Caribbean has a way of slowing your internal clock, and breakfast at Celeste embraces that philosophy. — Datwon Thomas, VIBE.com, 8 Aug. 2026

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

Rhymes for internal clock

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