spectra

[spek-truh] / ˈspɛk trə /

NOUN

color spectrum

Synonyms

STRONG

rainbow

WEAK

chromatic spectrum hue cycle

NOUN

range

Synonyms

STRONGEST

gamut scope

STRONG

compass extent field scale span sweep

NOUN

array

Synonyms

STRONGEST

continuum range sphere

STRONG

colors distribution sequence series

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The spectra revealed multiple metals -- elements heavier than helium -- mixed into the gas.

From Science Daily • Jan. 24, 2026

The spectra of the little red dots differed significantly from known dust-reddened active galactic nuclei.

From Science Daily • Nov. 29, 2025

Balmer breaks can appear in the spectra of single, very hot, young stars, as well as in galaxies containing many such stars.

From Science Daily • Nov. 29, 2025

When the object was first identified in 2018, spectra obtained with the 200-inch Hale Telescope at Palomar Observatory showed no special features.

From Science Daily • Nov. 7, 2025

Some scientists think that when expansion is followed by contraction, when the spectra of distant galaxies are all blue-shifted, causality will be inverted and effects will precede causes.

From "Cosmos" by Carl Sagan