bypass

or by-pass

[bahy-pas, -pahs]
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noun
  1. a road enabling motorists to avoid a city or other heavy traffic points or to drive around an obstruction.
  2. a secondary pipe or other channel connected with a main passage, as for conducting a liquid or gas around a fixture, pipe, or appliance.
  3. Electricity. shunt(def 9).
  4. 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), by·passed or (Rare) by·past; by·passed or by·past; by·pass·ing.
  1. to avoid (an obstruction, city, etc.) by following a bypass.
  2. to cause (fluid or gas) to follow a secondary pipe or bypass.
  3. to neglect to consult or to ignore the opinion or decision of: He bypassed the foreman and took his grievance straight to the owner.

Origin of bypass

1840–50; apparently back formation from by-passage; see by1 (adj.), passage1
Related formsby·pass·er, by-pass·er, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for bypassing

bypass

noun
  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
    1. the redirection of blood flow, either to avoid a diseased blood vessel or in order to perform heart surgerySee coronary bypass
    2. (as modifier)bypass surgery
  5. electronics
    1. an electrical circuit, esp one containing a capacitor, connected in parallel around one or more components, providing an alternative path for certain frequencies
    2. (as modifier)a bypass capacitor
verb -passes, -passing, -passed or -past (tr)
  1. to go around or avoid (a city, obstruction, problem, etc)
  2. to cause (traffic, fluid, etc) to go through a bypass
  3. to proceed without reference to (regulations, a superior, etc); get round; avoid
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

Word Origin and History for bypassing

bypass

n.

also by-pass, 1848, of certain pipes in a gasworks, from by + pass (n.). First used 1922 for "road for the relief of congestion;" figurative sense is from 1928. The heart operation was first so called 1957.

bypass

v.

1823, "to pass by" (implied in bypassed), from bypass (n.). From 1928 as "to go around, avoid;" figurative use from 1941. Related: Bypassed; bypassing.

Online Etymology Dictionary, © 2010 Douglas Harper

bypassing in Medicine

bypass

[bīpăs′]
n.
  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.

bypassing in Science

bypass

[bīpăs′]
  1. 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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.