Spectra is a term used to describe the range of colors, frequencies, or intensities of light or sound. It is often used in physics and astronomy to describe the distribution of energy emitted by a particular source. The two crossword solutions for the term spectra are gamuts and ranges. Gamuts refer to the full range of colors, sounds, or intensities that can be produced by a particular source. Ranges refer to the range of values within a particular set of data. Both gamuts and ranges are used to describe the full range of a particular phenomenon.