- a device for amplifying electromagnetic waves by stimulated emission of radiation.
Origin of maser
1950–55; m(icrowave) a(mplification by) s(timulated) e(mission of) r(adiation)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for maser
Rhazes quoted Maser Djawah freely and evidently trusted his declarations implicitly.Old-Time Makers of Medicine
James J. Walsh
The mazer-bowls were made from maple-wood, so named from the German Maser, a spotted wood.Cups and their Customs
George Edwin Roberts
"Don't try and buff me, dinAlt," the maser barrel pushed harder against his back.The Ethical Engineer
Henry Maxwell Dempsey
- a device for amplifying microwaves, working on the same principle as a laser
C20: m (icrowave) a (mplification by) s (timulated) e (mission of) r (adiation)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for maser
1955, acronym from "microwave amplification (by) stimulated emission (of) radiation."
Online Etymology Dictionary, © 2010 Douglas Harper
- Short for microwave amplification by stimulated emission of radiation. A device that generates coherent microwaves using the same principles as a laser. Masers are used in a variety of applications, including in atomic clocks. Natural masers are found in outer space when water or other substances are excited by radiation from a star or by the energy of a collision.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.