primeniti

1. to apply; to put into practice
   Konačno sam primenio ono što sam naučio na kursu. — I finally put into practice what I learned on the course.
   Primenila je mamin savet i uspelo je. — She followed her mom's advice and it worked.
2. (+ na + acc.) to apply to
   Ovo pravilo ne može da se primeni na tvoj slučaj. — This rule can't be applied to your case.
3. (of force, measures, treatment) to use; to employ
   Policija je primenila silu da rastera masu. — The police used force to disperse the crowd.
   Lekari su primenili novu terapiju. — The doctors used a new treatment.

Construction: primeniti nešto na nešto — to apply something to something.