# dark sector

> English word · Noun

## Definitions
1. The unknown portion of the Universe outside standard physics, including dark matter and dark energy.
2. The unknown portion of the Universe outside standard physics, including dark matter and dark energy.

## Etymology
From dark + sector. From being named after dark matter and dark energy, and being portion (sector) of a whole (universe).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/dark-sector