spectrum
Pronunciation:
/ˈspektɹəm//ˈspɛkt(ʃ)ɹəm/noun
Definitions
A range; a continuous, infinite, one-dimensional set, possibly bounded by extremes.
Specifically, a range of colours representing light (electromagnetic radiation) of contiguous frequencies; hence electromagnetic spectrum, visible spectrum, ultraviolet spectrum, etc.
The autism spectrum.
The pattern of absorption or emission of radiation produced by a substance when subjected to energy (radiation, heat, electricity, etc.).