- The definition of in-parallel is two objects that extend in the same direction and are always the same distance apart.
An example of in-parallel is a railroad track.
- In-parallel is defined as to be heading the same distance and direction as something else.
An example of in-parallel is a road that runs the same direction, right next to a highway.
- In-parallel means something that is the same distance and direction away from something else.
An example of in-parallel is two lines of people standing directly across from each other.