Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • abbreviation Latin Scientiae Magister (Master of Science)
  • abbreviation service mark
  • abbreviation Soldier's Medal
  • abbreviation stage manager
  • abbreviation stationmaster

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The ISO 3166-1 two-letter (alpha-2) code for San Marino.
  • noun service mark
  • initialism US Service Module

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