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Dark matter   /dɑrk mˈætər/   Listen
Dark matter

noun
1.
(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.






WordNet 3.0 © 2010 Princeton University








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Words linked to "Dark matter" :   matter, cosmogeny, cosmology, cosmogony, weakly interacting massive particle, wimp



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