1. (abbreviation) .  Imperial Service Medal.
  2. (abbreviation) .  Institute for Supply Management.
  3. (abbreviation) .  (astronomy) interstellar medium.
  4. Noun.  A belief that can be described by a word ending in -ism.
  5. Noun.  ''Specifically'', a form of discrimination, such as racism or sexism.

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This entry was last updated on RefTopia from its source on 3/20/2012.