Hour

usgb/ˈaʊər/Volume
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LampPro Tip 1/3
Duration ReferencePlay
Use 'hour' when indicating the length of time something takes. SlideThe test will last an hour.
LampPro Tip 2/3
ApproximationPlay
'About an hour' implies a rough estimate, not exactly 60 minutes. SlideI'll be back in about an hour.
LampPro Tip 3/3
Common PhrasesPlay
'On the hour' means when the clock strikes a full hour. SlideThe show starts on the hour.