TWENTY-FOUR-HOUR CLOCK Definition & Meaning

twenty-four-hour clock

or 24-hour clock

[ twen-tee-fawr-ouuhr klok, ou-er, twuhn-tee- ]

Phonetic (Standard)IPA

noun

a system of time measurement in which hours in the day are counted off consecutively from 0 to 24, with midnight being either 00:00 or 24:00. Compare twelve-hour clock ( def ).

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��t¶�� History and Origins

Origin of twenty-four-hour clock¹

First recorded in 1780–90

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Example Sentences

Examples have not been reviewed.

The 1300 is 1:00 p.m., written according to a twenty-four-hour clock—and PD stands for “Pirate’s Den,” an abbreviation I know well.

From

The great twenty-four-hour clock at the end of the Board Room, ticking on and on while the Secretary read, wore an unfamiliar face.…Yes, time had gone wrong, somehow: and the events of the passage home to Falmouth, of the journey up to the doors of the Admiralty, though they ran on a chain, had no intervals to be measured by a clock, but followed one another like pictures on a wall.

From

twenty-four twenty-fourmo

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