bypass

American  

[bahy-pas, -pahs] / ˈbaɪˌpæs, -ˌpɑs /

Or by-pass

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.

4. a surgical procedure in which a diseased or obstructed hollow organ is temporarily or permanently circumvented.

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verb (used with object)

bypassed, bypast, bypassed, bypast, bypassing

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.

bypass British  

/ ˈbaɪˌpɑːs /

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 surgery See 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

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verb

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

bypass Scientific  

/ bī′păs′ /

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

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Other Word Forms

• by-passer
  noun
• bypasser
  noun

Etymology

Origin of bypass

1840–50; apparently back formation from by-passage; see by (adj.), passage ¹

Explanation

When you bypass something, you avoid it, go around it, or ignore it. You might wish you could just read the books assigned in your English class and bypass the papers and exams. You can bypass something physically, like when you bypass the busiest intersections in town during rush hour, driving on smaller streets instead. You can also bypass things figuratively: political candidates often bypass hard questions from reporters, and big businesses sometimes find ways to bypass some of the taxes they owe. As a noun, a bypass is either an alternative road or route; or a heart operation that allows blood flow when an artery is blocked.

Example Sentences

Merseyside Police said the driver was caught after complaints the Rainford Bypass was being used by vehicles "as a racetrack".

From BBC • May 11, 2025

Survey results instead revealed that participants generally experienced significant improvements in quality of life after treatment, regardless of their cohort or whether they underwent Bypass or Endo.

From Science Daily • Apr. 10, 2024

Within about 20 minutes, the fire had moved through the field and jumped the four-lane Lahaina Bypass, igniting homes on the other side.

From Seattle Times • Sep. 26, 2023

Around the same time, Lahaina Bypass was closed after “an apparent flareup of the Lahaina fire,” Maui County officials said in a statement.

From Los Angeles Times • Aug. 24, 2023

Mabel hated Miss Bypass because Miss Bypass was, she said, the rudest creature she ever met.

From If Winter Comes by Hutchinson, A. S. M. (Arthur Stuart-Menteth)

Related Words

• circumvent
• ignore
• neglect
• omit
• sidestep
• skirt