1. A standardized, authorized, or formally established procedure or technique that is recognized by relevant authorities or organizations
The official method for water quality testing is outlined in the EPA guidelines.
O método oficial para testes de qualidade de água está descrito nas diretrizes da EPA.
2. A prescribed way of doing something that has been formally approved or endorsed
The university requires students to follow the official method for citing sources.
A universidade exige que os alunos sigam o método oficial para citar fontes.