An obturator designed to restore defects specifically in the nasal meatus area is termed a Meatal obturator. This type of obturator effectively closes openings in the nasal passage, aiding in the separation of oral and nasal cavities and improving functions like speech and swallowing. It is distinct from palatal, pharyngeal, or alveolar obturators, which address defects in the palate, pharynx, or alveolar ridge respectively. The naming is based on the precise anatomical site being restored, ensuring targeted rehabilitation tailored to the defect's location.

Reference: Prosthodontic Treatment for Edentulous Patients, George A. Zarb, Edition 13.