microprobe

noun
mi·cro·probe | \-ˌprōb \

Definition of microprobe 

: a device for microanalysis that operates by exciting radiation in a minute area of material so that the composition may be determined from the emission spectrum

First Known Use of microprobe

1932, in the meaning defined above

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The first known use of microprobe was in 1932

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microprobe

noun
mi·cro·probe | \-ˌprōb \

Medical Definition of microprobe 

: a device for microanalysis that operates by exciting radiation in a minute area or volume of material so that the composition may be determined from the emission spectrum

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