weakly interacting massive particle weakly interacting massive particle /ˈwiːkli ɪntəˈræktɪŋ ˈmæsɪv ˈpɑːrtɪkl/

noun

1. (physics) a hypothetical subatomic particle of large mass that interacts weakly with ordinary matter through gravitation; postulated as a constituent of the dark matter of the universe  ( weakly interacting massive particle , WIMP )
   (physics) a hypothetical subatomic particle of large mass that interacts weakly with ordinary matter through gravitation; postulated as a constituent of the dark matter of the universe