[bahy-pas, -pahs]
a road enabling motorists to avoid a city or other heavy traffic points or to drive around an obstruction.
a secondary pipe or other channel connected with a main passage, as for conducting a liquid or gas around a fixture, pipe, or appliance.
Electricity, shunt ( def 9 ).
a surgical procedure in which a diseased or obstructed hollow organ is temporarily or permanently circumvented. Compare coronary bypass, gastric bypass, heart-lung machine, intestinal bypass.
verb (used with object), bypassed or (Rare) bypast; bypassed or bypast; bypassing.
to avoid (an obstruction, city, etc.) by following a bypass.
to cause (fluid or gas) to follow a secondary pipe or bypass.
to neglect to consult or to ignore the opinion or decision of: He bypassed the foreman and took his grievance straight to the owner.
Also, by-pass.

1840–50; apparently back formation from by-passage; see by1 (adj.), passage1

bypasser, by-passer, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To bypass
World English Dictionary
bypass (ˈbaɪˌpɑːs)
1.  a main road built to avoid a city or other congested area
2.  any system of pipes or conduits for redirecting the flow of a liquid
3.  a means of redirecting the flow of a substance around an appliance through which it would otherwise pass
4.  surgery
 a.  See coronary bypass the redirection of blood flow, either to avoid a diseased blood vessel or in order to perform heart surgery
 b.  (as modifier): bypass surgery
5.  electronics
 a.  an electrical circuit, esp one containing a capacitor, connected in parallel around one or more components, providing an alternative path for certain frequencies
 b.  (as modifier): a bypass capacitor
vb , -passes, -passing, -passed, -past
6.  to go around or avoid (a city, obstruction, problem, etc)
7.  to cause (traffic, fluid, etc) to go through a bypass
8.  to proceed without reference to (regulations, a superior, etc); get round; avoid

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

1848, of certain pipes in a gasworks, from by + pass. First used 1922 for "road for the relief of congestion;" fig. sense is from 1928. The heart operation was first so-called 1957.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Medical Dictionary

bypass by·pass (bī'pās')

  1. A passage created surgically to divert the flow of blood or other bodily fluid or to circumvent an obstructed or diseased organ.

  2. A surgical procedure to create such a channel.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
bypass   (bī'pās')  Pronunciation Key 

(click for larger image in new window)

A passage created surgically to divert the flow of blood or other bodily fluid or to circumvent an obstructed or diseased organ.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature