prerequisite UK /pɹiːˈɹɛkwɪzɪt/US /pɹiˈɹɛkwəzət/noun 2adjective 1forms 1 noun2 •Something that is required as necessary or indispensable, or as a prior condition of something else.A degree is a prerequisite for entry into this profession. •A course or topic that must be completed before another course or topic can be started.Algebra is typically a prerequisite for physics. adjective1 •Required as a prior condition of something else; necessary or indispensable.The prerequisite warm-up to the match was ignored.A good command of Spanish is prerequisite for enrolling in this course. formsprerequisites