A parallel circuit has two or more paths for current to flow through. Voltage is the same across each component of the parallel circuit. The sum of the currents through each path is equal to the total current that flows from the source.
When two or more resistors are connected across two points in such a way that the voltage drop across each resistor is the same and there are more than one path for the current to flow, then such a connection is called Parallel Connection Of Resistors or Parallel Circuit.

Here, Voltage across the ends of each resistor is the same.