indeks

1. (at university) student record book
   Profesor mi je upisao ocenu u indeks. — The professor entered my grade in my record book.
   Zaboravio sam indeks kod kuće. — I left my student record book at home.
2. index
   Indeks potrošačkih cena porastao je za dva odsto. — The consumer price index rose by two percent.
   Izračunaj svoj indeks telesne mase. — Calculate your body mass index.
3. (in a book) index
   Potraži to ime u indeksu na kraju knjige. — Look that name up in the index at the back of the book.
4. (in maths, chemistry) index; subscript or superscript
   U formuli H₂O dvojka je donji indeks. — In the formula H₂O the two is a subscript.
   Svaki član niza ima svoj indeks. — Each term of the sequence has its own index.

In Serbia, "indeks" in everyday talk most often means a student's record book.