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

Rhymes for roentgen ray

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Browse Nearby Words

roentgenoscope
roentgen ray
roentgen-ray tube
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Cite this Entry

“Roentgen ray.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/roentgen%20ray. Accessed 5 May. 2025.

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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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