Dictionary

quarter hour

noun

: 15 minutes : a period of time that lasts for 15 minutes

Full Definition of QUARTER HOUR

1
:  fifteen minutes
2
:  any of the quarter points of an hour
3
:  a unit of academic credit representing an hour of class (as lecture class) or three hours of laboratory work each week for an academic quarter

Examples of QUARTER HOUR

  1. Trains depart every quarter hour.
  2. I waited a quarter hour in line.

First Known Use of QUARTER HOUR

1766

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