HyperDic: dark_matter

English > 1 sense of the expression dark matter:
NOUNsubstancedark matter(cosmology) a hypothetical form of matter that is believed to make up 90 percent of the universe
English > dark matter: 1 sense > noun 1, substance
Meaning(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.
Categorycosmology, cosmogony, cosmogenyThe branch of astrophysics that studies the origin and evolution and structure of the universe
Partsweakly interacting massive particle, WIMPA hypothetical subatomic particle of large mass that interacts weakly with ordinary matter through gravitation
BroadermatterThat which has mass and occupies space
Spanishmateria oscura
Catalanmatèria fosca

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