Webster's Revised Unabridged Dictionary · 1913

hr

hr , noun

[abbreviation]

An abbreviation for hour, the period of time equal to 1/24th of a day.

Text from the public-domain GNU Collaborative International Dictionary of English, derived from Webster's Revised Unabridged Dictionary (1913). Definitions marked with were added by later GCIDE contributors and are not in the original 1913 edition.

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