maser

noun
ma·​ser | \ˈmā-zər \

Definition of maser 

: a device or object that emits coherent microwave radiation produced by the natural oscillations of atoms or molecules between energy levels

Examples of maser in a Sentence

Recent Examples on the Web

So Jefferts intentionally calibrates the maser at a frequency that's too high and one that's too low. Jay Bennett, Popular Mechanics, "The Centuries-Long Quest to Measure One Second," 24 Mar. 2017 The ball of cesium passes through the maser at the top of the chamber. Jay Bennett, Popular Mechanics, "The Centuries-Long Quest to Measure One Second," 24 Mar. 2017 The maser–the conceptual predecessor to the laser, which had been invented by Townes and others–had been around since the early 1950s, and the theoretical plans for the laser had also been around for a few years. Kat Eschner, Smithsonian, "Today We Use Lasers For Almost Everything. But They Took a Long Time to Seem Useful," 7 July 2017 The maser–the conceptual predecessor to the laser, which had been invented by Townes and others–had been around since the early 1950s, and the theoretical plans for the laser had also been around for a few years. Kat Eschner, Smithsonian, "Today We Use Lasers For Almost Everything. But They Took a Long Time to Seem Useful," 7 July 2017 The maser–the conceptual predecessor to the laser, which had been invented by Townes and others–had been around since the early 1950s, and the theoretical plans for the laser had also been around for a few years. Kat Eschner, Smithsonian, "Today We Use Lasers For Almost Everything. But They Took a Long Time to Seem Useful," 7 July 2017 The maser–the conceptual predecessor to the laser, which had been invented by Townes and others–had been around since the early 1950s, and the theoretical plans for the laser had also been around for a few years. Kat Eschner, Smithsonian, "Today We Use Lasers For Almost Everything. But They Took a Long Time to Seem Useful," 7 July 2017 The pumping scheme was originally designed for the laser’s predecessor, the maser, which amplified microwaves instead of light. Nicholas St. Fleur, New York Times, "Nicolaas Bloembergen, Who Shared Nobel for Advances With Laser Light, Dies at 97," 11 Sep. 2017 The maser–the conceptual predecessor to the laser, which had been invented by Townes and others–had been around since the early 1950s, and the theoretical plans for the laser had also been around for a few years. Kat Eschner, Smithsonian, "Today We Use Lasers For Almost Everything. But They Took a Long Time to Seem Useful," 7 July 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'maser.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of maser

1955, in the meaning defined above

History and Etymology for maser

microwave amplification by stimulated emission of radiation

Keep scrolling for more

Learn More about maser

Dictionary Entries near maser

masculy

Masdevallia

Masefield

maser

Maseru

mash

MASH

Statistics for maser

Look-up Popularity

Time Traveler for maser

The first known use of maser was in 1955

See more words from the same year

Keep scrolling for more

More Definitions for maser

maser

noun
ma·​ser | \ˈmā-zər \

Medical Definition of maser 

: a device that utilizes the natural oscillations of atoms or molecules between energy levels for generating electromagnetic radiation in the microwave region of the spectrum

More from Merriam-Webster on maser

Rhyming Dictionary: Words that rhyme with maser

Britannica.com: Encyclopedia article about maser

Comments on maser

What made you want to look up maser? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a soft lustrous wool fabric with mohair

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
True or False

Test your knowledge - and maybe learn something along the way.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!