Plain English Meaning
The requirements you have to meet before a flight school will let you sign up for a course.
Full Definition
The conditions a student must meet before being accepted into a particular flight training program or course, such as minimum age, English language proficiency, possession of a current medical certificate, prior pilot certificates or ratings, or completion of specified ground school.
Context Anchor
Seen when comparing flight schools, choosing a training program, or preparing to start pilot training.
Derivation
From 'enroll' (to sign up or register) and 'prerequisite' — Latin 'prae' (before) plus 'requisitus' (required). Together: 'what is required before signing up.'