spectrum

UK /ˈspɛktɹəm/ US /ˈspɛktɹəm/
noun 5

Definitions

noun

1

A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.

Near-synonyms: sliding scale, continuum

As Mr. Obama prepared to take the oath, his approval rating touched a remarkable 70 percent in some polling — a reflection of good will across the political spectrum.

2

Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.

Current 3G technologies can send roughly 1 bit of data - a one or a zero - per second over each 1 Hz of spectrum that the operator owns.

3

The autism spectrum.

He punctuated his words with a look into my eyes that might have been read as threatening or menacing by anyone who was not on the spectrum. But I am on the spectrum, and so I stared back at him.

4

The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).

5

The set of eigenvalues of a matrix.

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