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Science & TechnologyGreekEnglish

Odometer

/oʊˈdɑːmɪtər/noun

An instrument that records the distance a vehicle has travelled.

The Greek roots

ὁδός
hodós
way, road
+
μέτρον
métron
measure

Literally: road-measurer

The story of the word

Vitruvius describes a Roman cart geared to drop a pebble into a bronze box at every mile, so the surveyors could count stones at the end of the day. The English word appears in the 1790s, and Thomas Jefferson is usually credited with fitting one of the early American versions to his carriage. The same ὁδός runs through method, a way of pursuing something, and exodus, the way out.

How it travelled
Ancient Greek → French → English
First recorded
1791

Same family

methodexodusperiodanodecathode

In a sentence

The odometer had rolled past 300,000 km and the car still started every morning.

Built on the same root

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