WordReference Random House Unabridged Dictionary of American English © 2020
SIG, 
  • special-interest group.

  • Sig., 
    1. Drugs(in prescriptions) write;
      mark;
      label: indicating directions to be written on a package or label for the use of the patient.
      • See  signa  Latin signā
    2. let it be written.
      • See  signa  Latin signā
    3. signor.
    4. signore;
      signori.

    sig., 
    1. signal.
    2. signature.
    3. signor.
    4. signore;
      signori.

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