English dictionary



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English noun: dark matter

1. dark matter (substance) (cosmology) a hypothetical form of matter that is believed to make up 90 percent of the universe; it is invisible (does not absorb or emit light) and does not collide with atomic particles but exerts gravitational force


Broader (hypernym)matter


Part holonymweakly interacting massive particle, WIMP


Domain categorycosmogeny, cosmogony, cosmology









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