Definitions for spectra

• Definition
• Anagrams (404)

spectra spec·tra

Spelling: [spek-truh]

IPA: /ˈspɛk trə/

Spectra is a 7 letter English word. It's valid Scrabble word worth 11 points. It's valid Words with friends word worth 13 points.

You can make 404 anagrams from letters in spectra (aceprst).

Definitions for spectra

noun

1. a plural of spectrum.
2. Physics. an array of entities, as light waves or particles, ordered in accordance with the magnitudes of a common physical property, as wavelength or mass: often the band of colors produced when sunlight is passed through a prism, comprising red, orange, yellow, green, blue, indigo, and violet. this band or series of colors together with extensions at the ends that are not visible to the eye, but that can be studied by means of photography, heat effects, etc., and that are produced by the dispersion of radiant energy other than ordinary light rays. Compare band spectrum, electromagnetic spectrum, mass spectrum.
3. a broad range of varied but related ideas or objects, the individual features of which tend to overlap so as to form a continuous series or sequence:

Origin of spectra

1605-15; Latin: appearance, form, equivalent to spec(ere) to look, regard + -trum instrumental noun suffix

Examples for spectra

In the same manner and under similar conditions the spectra of many other substances have been reversed.

The signals for colour we might get from the spectra direct.

The result is a mosaic of spectra, covering up to 60 different regions.

One of the spectra had dark lines and the other bright lines.

The problem to solve is how to utilize these two spectra now we have got them.

Hydrogen is seen in the spectra of nearly all stars, and also in those of nebulæ.

With 188 Illustrations and a table of spectra in Chromo-lithography.

Their spectra show a complexity of helium and hydrogen bands.

Even the spectra of these elements seem to be identical so far as known.

The spectra of all the Algol variables are of the first or Sirian type.