1. A medical or therapeutic intervention administered once, typically designed to resolve a condition without need for repetition
The doctor recommended a one-time treatment to eliminate the infection completely.
O médico recomendou um tratamento único para eliminar completamente a infecção.
2. A singular therapeutic session or procedure that addresses a problem in a single application
The laser surgery was a one-time treatment that permanently corrected her vision.
A cirurgia a laser foi um tratamento único que corrigiu permanentemente sua visão.