X-ray radiation
electromagnetic radiation consisting of X-rays, radiation in the X-ray spectrum, of shorter wavelength and higher frequency than ultraviolet and longer wavelength and lower frequency than gamma rays
(history) A male given name from Ancient Greek.
colloquial / conversational
A large extinct marine reptile in the family Mosasauridae, dominant marine predator of the Cretaceous. Mosasaurs are considred to be in squmata, the same group that includes lizards and snakes.
X線への長時間の被曝は、将来がんを発症するリスクを高める可能性があります。
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