Meaning & use
half an hour
A period of time equal to thirty minutes.
See it in a sentence
We waited half an hour for a table at the popular restaurant.
It takes about half an hour to walk from here to the station.
A note on using this word
'Half an hour' is the standard phrase; 'a half hour' is a common, slightly less formal American alternative.
Words with a similar meaning
thirty minutes
Choose a synonym to suit the sentence. Meanings can overlap without being identical.
Make it your own
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