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- pronunciation:
- spek
tr
 m
- features:
- Word Explorer, Word Parts
| part of speech: |
noun |
| inflections: |
spectra, spectrums |
| definition: |
a band of colors that is formed when light is passed through a prism, or in some other way. The six colors of a spectrum are red, orange, yellow, green, blue, and purple.
A rainbow is one kind of spectrum that is formed when sunlight passes through rain. |
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