# maser

> English word · Noun · IPA /ˈmeɪzɚ/ · frequency rank #82,519

## Definitions
1. a device for the coherent amplification or generation of electromagnetic radiation (especially of microwave frequency) by the use of excitation energy in resonant atomic or molecular systems
2. Any celestial object that generates microwaves using the same method

## Etymology
From MASER, acronym of microwave amplification by stimulated emission of radiation.

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