This is the 11569th most frequent Catalan word.
índex
The Catalan word "índex" means "index" in English, referring to an alphabetical list or a pointer/indicator.
The word 'índex' refers to a list of contents, usually at the beginning or end of a book, providing an overview of its structure.
El llibre té un índex detallat al principi.
The book has a detailed index at the beginning.
In this context, 'índex' represents a numerical measure or indicator used to quantify pollution levels.
L'índex de contaminació a la ciutat ha augmentat aquest mes.
The pollution index in the city has increased this month.
Here, 'índex' is used to describe a statistical indicator used in analysis and projections.