reg·is·trar 
(rĕjĭ-strär′, rĕj′ĭ-strär)
(rĕjĭ-strär′, rĕj′ĭ-strär)n.
1. One who is in charge of official records.
2. An officer in a college or university who keeps the records of enrollment and academic standing.
3. An officer of a corporation responsible for maintaining records of ownership of its securities.
4. An admitting officer in a hospital.
[Probably from registrary, from Medieval Latin registrārius, from registrum, register; see REGISTER.]