subpoena ad testificandum

subpoena ad testificandum
    n 1: a writ issued by court authority to compel the attendance
         of a witness at a judicial proceeding; disobedience may be
         punishable as a contempt of court [syn: {subpoena},
         {subpoena ad testificandum}]
    

Subpoena \Sub*poe"na\, n. [NL., fr. L. sub under + poena
   punishment. See {Pain}.] (Law)
   A writ commanding the attendance in court, as a witness, of
   the person on whom it is served, under a penalty; the process
   by which a defendant in equity is commanded to appear and
   answer the plaintiff's bill. [Written also {subpena}.]
   [1913 Webster]

   {Subpoena ad testificandum}. [NL.] A writ used to procure the
      attendance of a witness for the purpose of testifying.

   {Subpoena duces tecum}. [NL.] A writ which requires a witness
      to attend and bring certain documents.
      [1913 Webster]