preregistration

pre·reg·is·tra·tion

P0533600 (prē′rĕj-ĭ-strā′shən)n. An early registration, as for returning college students, that takes place before general registration.

preregistration

(ˌpriːrɛdʒɪˈstreɪʃən) nthe action of registering in advanceadjrelating to the period before registering