oclock
After the hour
O'clock specifies the hour in telling time, short for "of the clock": It's three o'clock.
The phrase distinguishes clock time from other methods of reckoning.
Beyond timekeeping, o'clock indicates direction using the clock face as a reference: Enemy aircraft at six o'clock means directly behind.
Gripping limbs' extremities
- dialGraduated circular indicator
- numeralsSymbols for quantities
- twelveOne more than eleven
- analogComparable equivalent
digital · watch · timepiece · sundial · chime · bell · ticktock · midnight
Once each sixty minutes
- circadianDaily biological cycle
- diurnalActive during daylight
- nocturnalActive during darkness
- cycleRepeating sequence of events
routine · regularity · pattern · tempo · pulse · schedule · daily · nightly
Scheduled time for something
- meetingGathering for discussion
- reservationAdvance arrangement to hold
- deadlineTime limit for completion
- timetableArranged list of events
calendar · agenda · planner · itinerary · punctuality · sharp · precisely · prompt
Precision timekeeping instrument
- atomicOf elemental particles
- quartzCrystalline silicon dioxide
- synchronizationAligning timing across systems
- calibrationAdjusting for measurement accuracy
accuracy · timekeeping · horology · exact · sharp · on the dot · precisely · punctual
hands
Gripping limbs' extremities
analog · digital · watch · timepiece · sundial · chime · bell · ticktock · midnight · noon
hourly
Once each sixty minutes
cycle · routine · regularity · pattern · tempo · pulse · schedule · daily · nightly · morning
appointment
Scheduled time for something
- meetingGathering for discussion
- reservationAdvance arrangement to hold
- deadlineTime limit for completion
timetable · calendar · agenda · planner · itinerary · punctuality · sharp · precisely · prompt · tardy
chronometer
Precision timekeeping instrument
- atomicOf elemental particles
- quartzCrystalline silicon dioxide
- synchronizationAligning timing across systems
calibration · accuracy · timekeeping · horology · exact · sharp · on the dot · precisely · punctual · split-second
clock, o'clock, clocks, alarm clock, clockwork, clocking, clockwise, counterclockwise, anticlockwise