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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
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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
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Time Traveler for microbeam
The first known use of microbeam was in 1950
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