What do a.m. and p.m. stand for?

optical maser

noun, Physics.
1. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for optical maser
  • They called their invention an optical maser--basing the name on an earlier technique for amplifying microwaves.
optical maser in Science
optical maser  
A laser that produces visible radiation.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Difficulty index for optical maser

Few English speakers likely know this word

Word Value for optical

Scrabble Words With Friends