plural
X–rays
plural
X–rays
Britannica Dictionary definition of X–RAY
1
X-rays
[plural]
technical
:
powerful invisible rays that can pass through various objects and that make it possible to see inside things (such as the human body)
2
[count]
also
x-ray
:
an image that is created by using X-rays and that is usually used for medical purposes
3
[count]
also
x-ray
:
a medical examination that involves using X-rays
— X–ray
adjective,
always used before a noun