This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. an instrument used to determine the chemical composition at a point on a solid surface, such as that of a mineral; analyzes the X-rays emitted when a beam of electrons are focused on the sample

"Zare and his Stanford co-workers discovered small amounts of PAHs associated with the carbonate globules within ALH84001 via a method termed microprobe two-step laser microscopy."

subminiature    donor­acceptor    metamagnetism    outweb    chromatogram