Parallel

1. Being an equal distance apart everywhere.
2. Of, relating to, or designating two or more straight coplanar lines that do not intersect.
3. Of, relating to, or designating two or more planes that do not intersect.
4. being synonymous or equivalent by analogy.
5. operating simultaneoulsy, or concurrently, at the same time.
6. in computer and communications equipment a parallel interface has multiple control and data connections operating simultaneously.