quarter hour
Fourth of sixty
A quarter hour is fifteen minutes—one fourth of an hour.
It appears in time expressions: We'll leave in a quarter hour.
The phrase often describes brief periods or scheduling increments: The trains run every quarter hour.
Also written as quarter-hour when used as an adjective: quarter-hour intervals.
- fifteen minutesFourth of an hour
- fifteenNumber after fourteen
- minutesSixty-second intervals
- clockDevice displaying time
- timeMeasured passage of moments
time slot · interval · tick · tick tock · chime · ship's bells · segment · slice · brief · short · waiting · on the dot · punctual · schedule · appointment · coffee break · timer · egg timer
- time unitssecond, minute, seconds, day, minutes
- timekeepingclock, watch, watches, clocks, timer
- hoursone o'clock, two o'clock, three o'clock, four o'clock, five o'clock
- quick breaksbreak, coffee break, power nap, catnap, recess
- time slotstime slot, booking window, prime time, primetime, air time
- numbersone, two, four, three, 0