Focus on the pronunciation of sustainability index
English definition of “sustainability index”
noun [C] (plural sustainability indexes, or sustainability indices)
› ENVIRONMENT, STOCK MARKET a system that measures the financial results of companies that try to protect the environment rather than just make a quick profit: DJSI World, the Dow Jones' premier sustainability index, identifies the top 10% of best-performing companies in areas of sustainability.
› COMMERCE, ENVIRONMENT a list of product information provided for consumers who want to understand the process involved in making the products they buy and how that process affects the environment: The sustainability index shows consumers a product's environmental impact.