polugodište

1. (of a school year) term; half of the school year
   Prvo polugodište se završava pred Novu godinu. — The first term ends just before New Year.
   Na kraju polugodišta dobio je dve jedinice. — At the end of the term he got two failing grades.
2. (of a calendar year) half-year; six months
   Prodaja je u prvom polugodištu porasla za deset odsto. — Sales rose by ten percent in the first half of the year.

Polugodište is used for schools, while universities use semestar.