plural of dark lantern

any of several regions in a glow discharge in which little or no light is produced / (astronomy) the intergalactic void that exists between galaxies

plural of dark space

plural of dark meat

(astronomy, astrophysics) A hypothetical form of energy which, it is supposed, is spread uniformly throughout space (and time) and has anti-gravitational properties: it represents a possible mechanism for the cosmological constant, and thus is one of the possible explanations for the current accelerating rate of expansion of the universe; and it is estimated to account for about 74% of the mass-energy of the universe.

(Norse mythology) A member of the race of Dǫkkálfar, creatures who live underground.

Alternative spelling of pitch-dark

Absolutely dark or black; as dark as pitch.

(physics) The temperature-dependent current that flows in a photodetector when no light is shining on it.

(see usage notes) The period of European history encompassing (roughly) 476–1000 CE. / (Ancient Greece) The Greek Dark Ages (c. 1100–750 BCE). / The dark ages of Cambodia (c. 1450–1863).