This is the 763rd most frequent Portuguese word.
índice
"Índice" in English means "index" or "rate," depending on the context.
In this context, 'índice' refers to a measured rate or proportion, specifically the approval rate of the students.
O índice de aprovação dos alunos aumentou este semestre.
The students' approval rate increased this semester.
Here, 'índice' means a list or catalog, specifically the subject or name index in a book.
O índice remissivo no final do livro ajuda a encontrar os tópicos rapidamente.
The index at the end of the book helps quickly find the topics.
In this usage, 'índice' refers to a calculated value or level, particularly the measured amount of pollution.