What is "pro hac vice"

a. (context legal English) Permitted for a specific case or action. adv. (context legal English) For a specific case or action.

Pro hac vice (American English pronunciation: [prəʊ hæk 'vi:tʃei]), Latin: "for this occasion" or "for this event" (literally, "for this turn"), is a legal term usually referring to a practice in common law jurisdictions, whereby a lawyer who has not been admitted to practice in a certain jurisdiction is allowed to participate in a particular case in that jurisdiction. Although pro hac vice admission is available in every American jurisdiction, civil law jurisdictions generally have much stricter rules for multi-jurisdictional practice.