Spectrum (noun)

1. A range of colors, as seen in a rainbow, produced by the separation of light by a prism or similar device.
2. A range of something that can be ordered according to categories, such as a range of opinions or abilities.
3. A range of electromagnetic waves, such as radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.

Origin:

The word "spectrum" comes from the latin word "spectrum" which means "appearance" or "apparition" and it first recorded use in the english language in the early 17th century.

Examples:

1. The spectrum of light is visible in a rainbow.
2. The political spectrum ranges from conservative to liberal.
3. The electromagnetic spectrum includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
4. The spectrum of emotions can range from happiness to despair.
5. The spectrum of sound ranges from low to high.