X-ray therapy

noun

: medical treatment (as of cancer) by controlled application of X-rays

Word History

First Known Use

1926, in the meaning defined above

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The first known use of X-ray therapy was in 1926

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“X-ray therapy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/X-ray%20therapy. Accessed 13 Jul. 2025.

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Medical Definition

X-ray therapy

noun

: medical treatment (as of cancer) by controlled application of X-rays

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X-ray therapy

noun

Word History

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