# kayser

> English word · Noun · frequency rank #78,748

## Definitions
1. A unit of wavenumber in the CGS system of units, equivalent to the number of waves in one centimeter.

## Etymology
Named after Heinrich Kayser.

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