grenz ray

noun, often capitalized G
\ ˈgren(t)s- \

Definition of grenz ray

: a soft X-ray with wavelength near the limit of extreme ultraviolet used especially in treating skin lesions

called also infraroentgen ray

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History and Etymology for grenz ray

partial translation of German grenzstrahl, from grenze border (from Middle High German grenize, from Polish granica) + strahl ray

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Cite this Entry

“Grenz ray.” Dictionary, Merriam-Webster, Accessed 28 Nov. 2020.

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