spectrum

Pronunciation

• (Canada), (UK) IPA: /ˈspektrəm/
• IPA: /ˈspɛktrəm/
• SAMPA: /"spEktr@m/

Noun

Singular spectrum

Plural spectra

A spectrum of colors

1. A range.
2. Specifically, a range of colors representing light of various frequencies.
3. (chemistry) The pattern of absorption or emission of radiation that is made by a substance when it is put in contact with an energy such as radiation, heat, electricity, etc.