The right of a defendant to have a court use its subpoena power to compel the appearance of material witnesses before the court(noun)
WordNet. Princeton University. 2010.
Use "compulsory process" in a sentence
"In all causes depending before any court, other than those of impeachments, of appeals, and military courts, facts put in issue shall be tried by jury, and in all courts whatever witnesses shall give their testimony vivâ voce in open court, wherever their attendance can be procured: and all parties shall be allowed counsel and compulsory process for their witnesses."
"In all criminal prosecutions the accused shall enjoy the right to a speedy and public trial, by an impartial jury of the State and district wherein the crime shall have been committed, which district shall have been previously ascertained by law, and to be informed of the nature and cause of the accusation; to be confronted with the witnesses against him; to have compulsory process for abtaining witnesses in his favor; and to have the assistance of counsel for his defence."