[ par-uh-lel, -luhl ]
/ ˈpær əˌlɛl, -ləl /



verb (used with object), par·al·leled, par·al·lel·ing or (especially British) par·al·lelled, par·al·lel·ling.

Origin of parallel

1540–50; < Latin parallēlus < Greek parállēlos side by side, equivalent to par- par- + állēlos one another; see allo-, else

OTHER WORDS FROM parallel Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for parallel

British Dictionary definitions for parallel

/ (ˈpærəˌlɛl) /

adjective (when postpositive, usually foll by to)


verb -lels, -leling or -leled (tr)

Word Origin for parallel

C16: via French and Latin from Greek parallēlos alongside one another, from para- 1 + allēlos one another
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for parallel

[ părə-lĕl′ ]


Of or relating to lines or surfaces that are separated everywhere from each other by the same distance.


Any of the imaginary lines encircling the Earth's surface parallel to the plane of the equator, used to represent degrees of latitude. See illustration at longitude.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.