halfhourly

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

adjective
  1. occurring every half-hour: a halfhourly interruption.

adverb
  1. 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. 2024