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

Per the American Heart Association’s scientific statement on circadian health, the body’s internal clock regulates cellular repair, hormone release and immune function on a precise schedule — and irregular timing throws that schedule off regardless of how many total hours are logged. —Allison Palmer, Charlotte Observer, 19 May 2026

How Shift Work Disrupts Your Body Clock The circadian rhythm is a roughly 24-hour internal clock regulated primarily by light. —Allison Palmer, Fort Worth Star-Telegram, 16 May 2026

Night shift work forces the body to be alert during hours it’s biologically built to sleep, creating chronic disruption to the circadian rhythm, a roughly 24-hour internal clock regulated primarily by light. —Allison Palmer, Sacbee.com, 15 May 2026

Changing meal times can disrupt the body’s internal clock, which helps regulate blood sugar. —Merve Ceylan, Health, 12 May 2026

Rhymes for internal clock

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