hr

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Definition

Noun: A unit of time equal to sixty minutes or one twenty-fourth of a day. It is a standard measure for quantifying durations.

Usage

The word "hr" is an abbreviation for "hour." It is primarily used in written contexts where space is limited or in informal notations, such as in schedules, charts, or casual notes. It is less common in formal prose.

Examples
  • The meeting is scheduled for 2 hr.
  • The recipe says to bake for 1 hr and 15 minutes.
  • The service guarantees a response within 24 hr.
Advanced Usage
  • In Technical/Scientific Writing: Used in data tables, figure captions, or specifications to concisely denote time measurements (e.g., "Incubation time: 3 hr").
  • In Business/Logistics: Commonly seen in delivery time estimates, work logs, or project timelines (e.g., "Labor: 40 hr").
Variants and Related Words
  • Hour (n.): The full, standard form of the word.
  • Hr. (n.): A variant with a period, also used as an abbreviation.
  • Hourly (adj./adv.): Occurring every hour; calculated by the hour.
Synonyms
  • 60 minutes
  • Unit of time
Notes on Meaning

"hr" is strictly an abbreviation and carries no meaning distinct from "hour." It does not refer to a specific clock time (like 3 o'clock) but only to a duration or period.

Noun
  1. a period of time equal to 1/24th of a day
    • the job will take more than an hour

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