stopwatch
Handheld interval measurer
A stopwatch is a handheld timing device used to measure elapsed time with precision, typically featuring buttons to start, stop, and reset the display.
Unlike regular watches that tell the time of day, stopwatches measure duration—how long something takes.
They're essential equipment for timing races, scientific experiments, and any activity where seconds matter.
The coach clicked his stopwatch as each runner crossed the finish line.
Time units, or extras
- millisecondsThousandths of a second
- minutesSixty-second intervals
- countdownBackward enumeration to zero
- durationLength of existence
elapsed · interval · lap time · split time · start · reset · precision · accuracy
Brief maximum-speed effort
- marathonLong-distance footrace
- relayStage-by-stage transmission
- trackPath or monitored route
- lapOne complete circuit
split · pace · runner · athlete · coach · training · interval · heat
Competition of speed
- heatTransferred thermal energy
- qualifierWord or phrase limiting meaning
- medalMetal honor token
- podiumRaised platform for speakers
record · personal best · photo finish · referee · official · judge · disqualification · placement
Precision timekeeping instrument
- chronographWatch with elapsed-time function
- timerDuration-tracking mechanism
- clockDevice displaying time
- horologyTimekeeping science and craft
Swiss · Casio · handheld · lanyard · bezel · crystal · battery
Systematic investigation procedure
- laboratoryFacility for scientific investigation
- reaction timeSpeed of response
- dataFacts for analysis
- trialJudicial examination of claims
observation · control · measurement · variable · procedure · hypothesis · replication · calibration
seconds
Time units, or extras
- millisecondsThousandths of a second
- minutesSixty-second intervals
- countdownBackward enumeration to zero
duration · elapsed · interval · lap time · split time · start · reset · precision · accuracy · synchronization
sprint
Brief maximum-speed effort
lap · split · pace · runner · athlete · coach · training · interval · heat · qualify
race
Competition of speed
podium · record · personal best · photo finish · referee · official · judge · disqualification · placement · ranking
chronometer
Precision timekeeping instrument
- chronographWatch with elapsed-time function
- timerDuration-tracking mechanism
- clockDevice displaying time
horology · Swiss · Casio · handheld · lanyard · bezel · crystal · battery
experiment
Systematic investigation procedure
- laboratoryFacility for scientific investigation
- reaction timeSpeed of response
- dataFacts for analysis
trial · observation · control · measurement · variable · procedure · hypothesis · replication · calibration · physics
- clocksdigital clock, wall clock, quartz clock, analog clock, grandfather clock
- measurementscales, gauging, balance, metering, gram
- watcheschronograph, smartwatch
- countdownscountdown timer, countdown clock, T-minus, tick tock, ticking
- Digital WatchesCasio, G-Shock, smartwatch, LCD display, LED display
- Field Daysack race, three-legged race, relay race, tug of war, egg and spoon race
stopwatchclock
Device displaying time
wall clock · wristwatch · timepiece · sundial · atomic clock
stopwatchsundial
Shadow-based timekeeper
hourglass · egg timer · water clock · intuition · guesswork