: a branch of mathematics or of symbolic logic that deals with the nature and relations of sets. â set theoretic adjective. See set theory defined for kids. ADVERTISEMENT.
Discrimination Lawsuit. A lawsuit is a civil action brought before a court of law in which a plaintiff, a party who claims to have received damages from a defendant's actions, seeks a legal or equitable remedy. The defendant is required to respond to the plaintiff's complaint.
A civil action (as opposed to a criminal or family proceeding, for example) begins with a Complaint, usually accompanied by a Summons. A Complaint is a legal document that lays out the claims that the Plaintiff (the person or business bringing the lawsuit) has against the Defendant (the person or business being sued).