clock-hour

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

noun

a full 60-minute period, as of class instruction or therapeutic consultation.Compare hour (def. 11).

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Origin of clock-hour

First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020