missing mass

noun Astrophysics.
  1. the difference in mass in the universe between that observed to exist and that necessary for the closed universe model.

Origin of missing mass

First recorded in 1975–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

missing mass in Science

missing mass

[mĭsĭng]
  1. See dark matter.
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