halfhourly

[ haf-ouuhr-lee, -ou-er-, hahf- ]

adjective

half-hour (def. 3).
occurring every half-hour: a halfhourly interruption.

adverb

at half-hour intervals: The bell rang halfhourly.

Origin of halfhourly

¹

First recorded in 1800–10; half + hourly

Words Nearby halfhourly

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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