Collins Concise English Dictionary © HarperCollins Publishers::
Sm the chemical symbol for
  1. samarium
WordReference Random House Unabridged Dictionary of American English © 2026
SM, 
  1. service mark.

Sm, [Symbol, Chem.]
  1. Chemistrysamarium.

sm., 
  1. small.

S-M, 
    1. Also, S and M. sadomasochism.
    2. sadomasochistic.
    Also, s-m, S/M, s/m 
S.M., 
    1. Master of Science.
      • Neo-Latin Scientiae Magister
    2. Militarysergeant major.
    3. State Militia.

Collins Concise English Dictionary © HarperCollins Publishers::
SM abbreviation for
  1. sergeant major
  2. sadomasochism
'Sm' also found in these entries (note: many are not synonyms or translations):
sadomasochism - samarium - smash - smog - berseem - service mark - smaze - sm. c.

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