1. A method or procedure that has not been tested, validated, or demonstrated to be effective or reliable
The doctor refused to use that unproven technique on patients without further research.
O médico recusou usar essa técnica não comprovada em pacientes sem pesquisa adicional.
2. A practice or approach whose effectiveness has not been established through scientific evidence or practical experience
The startup relied on an unproven technique that had never been tested in real-world conditions.
A startup dependia de uma técnica não comprovada que nunca havia sido testada em condições reais.