paralelan

1. (of lines, streets) parallel
   Moja ulica je paralelna sa Knez Mihailovom. — My street runs parallel to Knez Mihailova.
   Nacrtaj dve paralelne linije. — Draw two parallel lines.
2. (of events, processes) parallel; simultaneous
   Vode se paralelni pregovori s obe strane. — Parallel negotiations are being held with both sides.
   Ponekad mi se čini da živim u paralelnom svetu. — Sometimes I feel like I live in a parallel world.

Usually used with «s/sa» + instrumental: paralelan sa zidom.