unapproved materials
[/ˌʌnəˈpruːvd məˈtɪriəlz/]
nounpl: unapproved materials
materiais não aprovados
1. Items, substances, or documents that have not been officially authorized, certified, or sanctioned by a relevant authority, institution, or regulatory body
The construction company was fined for using unapproved materials in the building foundation.
A construtora foi multada por usar materiais não aprovados na fundação do edifício.
2. Educational or informational content that has not been validated or endorsed by an educational institution or curriculum authority
Students were instructed not to cite unapproved materials in their research papers.
Os alunos foram instruídos a não citar materiais não aprovados em seus trabalhos de pesquisa.
3. Substances or components prohibited by regulation or policy due to safety, quality, or ethical concerns
The pharmaceutical company recalled the product after discovering unapproved materials in its composition.
A empresa farmacêutica recolheu o produto após descobrir materiais não aprovados em sua composição.
This term is frequently used in regulatory, educational, and industrial contexts in both the USA and Brazil. In the USA, it commonly appears in manufacturing, pharmaceuticals, and construction industries where compliance with standards (FDA, EPA, OSHA) is critical. In Brazil, 'materiais não aprovados' is used similarly in industrial and educational settings, often related to compliance with ABNT (Associação Brasileira de Normas Técnicas) standards and government regulations.
Related Idioms & Phrases
use of unapproved materials
supply of unapproved materials
ban on unapproved materials
list of unapproved materials
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