# Kater's pendulum

> English word · Noun

## Definitions
1. A reversible free-swinging pendulum used as a gravimeter.

## Etymology
Invented by British physicist and army captain Henry Kater in 1817.

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