1. An industry or economic segment experiencing reduced output, employment, revenue, or market share over time
The textile industry has become a declining sector in developed nations due to outsourcing.
A indústria têxtil tornou-se um setor em declínio nas nações desenvolvidas devido à terceirização.
2. A business area characterized by falling demand, shrinking profitability, or decreasing competitive advantage
Print media is a declining sector as more people consume news digitally.
A mídia impressa é um setor em declínio, pois mais pessoas consomem notícias digitalmente.