1. A medical, legal, or professional service or treatment performed by someone who lacks proper authorization, credentials, or official permission from regulatory authorities
The clinic was shut down for performing unlicensed procedures without proper medical credentials.
A clínica foi fechada por realizar procedimentos não licenciados sem credenciais médicas apropriadas.
2. Any activity or process carried out without the required license or legal authorization
He was arrested for conducting unlicensed procedures in his home laboratory.
Ele foi preso por conduzir procedimentos não licenciados em seu laboratório caseiro.