corequisite
/kɒrriˈkwest/Definitions
1. noun
A course or requirement that must be taken in conjunction with another course or requirement.
“The statistics course is a corequisite for the research methods course, and students must enroll in both to graduate.”
2. verb
To require or specify a course or requirement that must be taken in conjunction with another course or requirement.
“The program corequires students to take both the math and science courses in their first year.”