dark matter

Tweet

noun

Definition of DARK MATTER

:  nonluminous matter not yet directly detected by astronomers that is hypothesized to exist to account for various observed gravitational effects

Take a 2 minute break! See if
you can Name That Thing »

First Known Use of DARK MATTER

1982

Rhymes with DARK MATTER

back matter, backscatter, bespatter, flat-hatter, front matter, gray matter, no matter, standpatter, the matter, white matter, wildcatter