To save this word, you'll need to log in.
mi·cro·beam | \ ˈmī-krō-ˌbēm 
\
\Definition of microbeam
: a beam of radiation of small cross section
a focused laser microbeam a microbeam of electrons
Keep scrolling for more
Keep scrolling for more
More Definitions for microbeam
microbeam
nounmi·cro·beam | \ ˈmī-krō-ˌbēm \
\Medical Definition of microbeam
: a beam of radiation of small cross section
a laser microbeam
Comments on microbeam
What made you want to look up microbeam? Please tell us where you read or heard it (including the quote, if possible).
Test Your Vocabulary
More Confusing Words—Quiz
- The magician
______moved the selected card to the top of the deck.
Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridgedWords at Play
Ask the Editors
Word Games
- More Confusing Words—Quiz
How many of these commonly confused words do you know?
Take the quiz - Name that Thing: Toys and Games Edition
It's all fun and games until someone beats your high score.
Take the quiz - Spell It
Can you spell these 10 commonly misspelled words?
Take the quiz - Citation
Do you know the person or title these quotes describe?
Play the game
Share microbeam
Time Traveler for microbeam
The first known use of microbeam was in 1950
See more words from the same year