# metrograph

> English word · Noun

## Definitions
1. An instrument attached to a locomotive for recording its speed and the number and duration of its stops.
2. A device used to measure the flow and velocity of liquids.
3. Any of various devices that continuously record several meteorological phenomena; a radiosonde or one of its precursors.
4. A device that uses reflection holograms to accurately measure three-dimensional objects, used primarily in orthodontics.

## Etymology
From metro- + -graph.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/metrograph