light sector

noun

The known universe; the part of the universe that is not part of the dark sector; the segment of the universe that is explained by the known laws of physics, and whose components (particles) are predicted by it. The portion of the universe that is not dark matter nor dark energy.

Opposite
dark sector
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Meanings

nounlight sector (plural light sectors)

plural light sectors

  1. astronomyThe known universe; the part of the universe that is not part of the dark sector; the segment of the universe that is explained by the known laws of physics, and whose components (particles) are predicted by it. The portion of the universe that is not dark matter nor dark energy.
    1. astronomyThe fraction of the universe that interacts with electromagnetism (ie. light).

Synonyms & antonyms

Opposite
dark sector

Origin

Blend of light + dark sector. From not being part of the dark sector.

Full word history & related roots →
Cite this entry
APA

light sector. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/light%20sector

MLA

“light sector.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/light%20sector. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “light sector,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/light%20sector.

Source: light sector on Wiktionary, CC BY-SA 4.0.