1. plural noun: radio waves

an electromagnetic wave of a frequency between about 104 and 1011 or 1012 Hz, as used for long-distance communication.

2. plural noun: microwaves

an electromagnetic wave with a wavelength in the range 0.001–0.3 m, shorter than that of a normal radio wave but longer than those of infrared radiation. Microwaves are used in radar, in communications, and for heating in microwave ovens and in various industrial processes.

"microwave radiation"

3. adjective

(of electromagnetic radiation) having a wavelength just greater than that of the red end of the visible light spectrum but less than that of microwaves. Infrared radiation has a wavelength from about 800 nm to 1 mm, and is emitted particularly by heated objects.

noun

the infrared region of the spectrum; infrared radiation.

4. Light or "visible light" refers to the visible region of the electromagnetic spectrum – that is, the range of wavelengths that trigger brightness and colour perception in humans. It lies between UV and infrared radiation.

5.adjective

(of electromagnetic radiation) having a wavelength shorter than that of the violet end of the visible spectrum but longer than that of X-rays.

6.noun

1.

an electromagnetic wave of high energy and very short wavelength, which is able to pass through many materials opaque to light.

2.

a photographic or digital image of the internal composition of something, especially a part of the body, produced by X-rays being passed through it and being absorbed to different degrees by different materials.

"the fracture was clearly visible on the X-ray"

Similar:

radiogram

radiograph

X-ray image

roentgenogram

angiogram

lymphangiogram

mammogram

pyelogram

cholangiogram

verb

photograph or examine with X-rays.

"luggage bound for the hold is X-rayed

7.noun: gamma ray

penetrating electromagnetic radiation of a kind arising from the radioactive decay of atomic nuclei.