What does cyclometer mean?
A cyclometer is a measuring instrument attached to a bicycle to record the distance travelled, typically working by counting the rotations of the wheel and converting them into miles or kilometres using the wheel's known circumference. Mechanical versions, once mounted near the fork or hub, used gears and dials much like an automobile's odometer; modern successors are electronic 'bike computers' that also track speed, time, and cadence. The word derives from the Greek kyklos, meaning circle or wheel, combined with metron, meaning measure — literally a 'wheel measurer'. A second, largely historical sense refers to instruments for measuring circular arcs or the areas of circles, found mainly in older mathematical texts. Today the term survives chiefly among cycling enthusiasts and collectors of vintage bicycles, giving it a mildly nostalgic, technical flavour.
nounA cyclometer is a device that measures and records the distance travelled by a bicycle, typically by counting the rotations of the wheel. The term can also refer to an instrument for measuring arcs or angles of circles in mathematics.
- A device fitted to a bicycle that measures and displays the distance travelled, usually by counting wheel rotations.
- (Historical/technical) An instrument for measuring circular arcs or the area of circles.
"Her new cyclometer tracked every mile of the cross-country ride."
"Before setting off on the century ride, he zeroed his cyclometer so the mileage would be exact."
"The vintage bicycle's brass cyclometer, bolted to the front fork, still ticked faithfully with each revolution of the wheel."
Standard regular plural; used when referring to multiple devices, e.g. across a fleet of bicycles or in retail contexts.
"The shop stocked a wall of cyclometers, from basic mechanical models to GPS-enabled units."
The humble cyclometer was counting cyclists' miles long before GPS existed — all it needed was one magnet on a wheel spoke.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of cyclometer
Cyclometer combines the Greek kyklos ('circle, wheel') with metron ('measure'), entering English during the nineteenth century as bicycles themselves became widespread and riders sought to record their mileage. It belongs to the same family of '-meter' coinages as odometer and speedometer. Its Greek root also underlies related words such as cycle, cyclical, and hemicycle.
How cyclometer is actually used
The word is neutral in register and appears mainly in cycling contexts and older technical literature. In modern usage, 'bike computer' or 'cycling computer' has largely replaced it for electronic devices, so 'cyclometer' now often carries a slightly retro or mechanical connotation.
Easily confused with cyclometer
An odometer measures distance travelled, most commonly in motor vehicles, while a cyclometer is specifically the distance-measuring device fitted to a bicycle.
A speedometer indicates instantaneous speed, whereas a cyclometer records accumulated distance (though many modern bicycle computers do both).