1. The distribution of electromagnetic energy over different wavelengths. 2. The wide range of linked things to one thing. In case of visible spectrum, it can be defined as the series of colours that are visible.

SPECTRUM: "The whole spectrum of events was shown in the calendar of the day care centre."
Cite this page: N., Pam M.S., "SPECTRUM," in PsychologyDictionary.org, April 13, 2013, https://psychologydictionary.org/spectrum/ (accessed September 19, 2021).