Definition of "Parallel" :

noun: something having the property of being analogous to something else

noun: an imaginary line around the Earth parallel to the equator

noun: (mathematics) one of a set of parallel geometric figures (parallel lines or planes)

"Parallels never meet."

verb: make or place parallel to something

"They paralleled the ditch to the highway."

verb: be parallel to

"Their roles are paralleled by ours."

verb: duplicate or match

adjective: being everywhere equidistant and not intersecting

"Parallel lines never converge."

adjective: of or relating to the simultaneous performance of multiple operations

"Parallel processing."