1. a course or requirement that must be taken at the same time as another course, or a condition that must be satisfied simultaneously with another condition
Usage: commonly used in academic contexts; often contrasted with prerequisite

Examples

• English 101 and Writing Lab are corequisites; you must enroll in both courses together.
• The math corequisite ensures students receive additional support while taking the main course.
• Many colleges list corequisites on their course descriptions to help students plan their schedules.
• Unlike a prerequisite, a corequisite is taken at the same time rather than before.
• The chemistry lab is a corequisite for the lecture course.