roentgen ray

noun

often capitalized 1st R

: x-ray

Word History

First Known Use

circa 1890, in the meaning defined above

Time Traveler

The first known use of roentgen ray was circa 1890

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Dictionary Entries Near roentgen ray

roentgen ray

roentgen-ray tube

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Cite this Entry

Style

“Roentgen ray.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/roentgen%20ray. Accessed 22 Mar. 2023.

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Kids Definition

roentgen ray

noun

often capitalized 1st R

: x-ray

Medical Definition

roentgen ray

noun

: x-ray sense 1

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