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clock-hour

American  
[klok-ouuhr, -ou-er] / ˈklɒkˌaʊər, -ˌaʊ ər /

noun

  1. a full 60-minute period, as of class instruction or therapeutic consultation.

Etymology

Origin of clock-hour

First recorded in 1870–75

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.