Bypass may refer to:
*
Bypass (road), a road that avoids a built-up area (not to be confused with passing lane)
*
Flood bypass
A flood bypass is a region of land or a large man-made structure that is designed to convey excess flood waters from a river or stream in order to reduce the risk of flooding on the natural river or stream near a key point of interest, such as a ...
of a river
Science and technology
Medicine
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Bypass surgery
Bypass surgery refers to a class of surgery involving rerouting a tubular body part.
Types include:
* Vascular bypass surgery such as coronary artery bypass surgery, a heart operation
* Cardiopulmonary bypass, a technique used in coronary artery ...
, a class of surgeries including for example:
**
Heart bypass
Coronary artery bypass surgery, also known as coronary artery bypass graft (CABG, pronounced "cabbage") is a surgical procedure to treat coronary artery disease (CAD), the buildup of plaques in the arteries of the heart. It can relieve chest pai ...
**
Gastric bypass
Gastric bypass surgery refers to a technique in which the stomach is divided into a small upper pouch and a much larger lower "remnant" pouch and then the small intestine is rearranged to connect to both. Surgeons have developed several differ ...
**
Cardiopulmonary bypass
Cardiopulmonary bypass (CPB) is a technique in which a machine temporarily takes over the function of the heart and lungs during surgery, maintaining the circulation of blood and oxygen to the body. The CPB pump itself is often referred to as a ...
Other
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Bypass capacitor
A decoupling capacitor is a capacitor used to decouple one part of an electrical network (circuit) from another. Noise caused by other circuit elements is shunted through the capacitor, reducing its effect on the rest of the circuit. For hig ...
, used to bypass a power supply or other high impedance component
*
High bypass
The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of the bypass stream to the mass flow rate entering the core. A 10:1 bypass ratio, for example, means that 10 kg of air passes through the bypass duct for ev ...
, a turbofan aircraft gas turbine engine
**
Bypass duct
The turbofan or fanjet is a type of airbreathing jet engine that is widely used in aircraft propulsion. The word "turbofan" is a portmanteau of "turbine" and "fan": the ''turbo'' portion refers to a gas turbine engine which achieves mechanical ...
**
Bypass ratio
The bypass ratio (BPR) of a turbofan engine is the ratio between the mass flow rate of the bypass stream to the mass flow rate entering the core. A 10:1 bypass ratio, for example, means that 10 kg of air passes through the bypass duct for ev ...
*
Bleach bypass
Bleach bypass, also known as skip bleach or silver retention, is a chemical effect which entails either the partial or complete skipping of the bleaching function during the processing of a color film. By doing this, the silver is retained in t ...
, an optical effect
*
Bypass switch
A bypass switch (or bypass TAP) is a hardware device that provides a fail-safe access port for an in-line active security appliance such as an intrusion prevention system (IPS), next generation firewall (NGFW), etc. Active, in-line security applia ...
, access port for an in-line active security appliance
*
Bypass (telecommunications)
{{unreliable sources, date=October 2018
In telecommunications, the term bypass has these meanings:
# The use of any telecommunications facilities or services that circumvents those of the local exchange common carrier.
#: ''Note:'' Bypass facili ...
* Bypass valve
** A
blowoff valve
A blowoff valve (also called dump valve or compressor bypass valve) is a pressure release system present in most petrol turbocharged engines. Blowoff valves are used to reduce pressure in the intake system as the throttle is closed, thus prevent ...
on a compressor
** A
manual gas addition valve on a rebreather
Other uses
* ''
The Bypass
''The Bypass'' is a 2003 short silent Bollywood film with actors Nawazuddin Siddiqui, Irrfan Khan, Irfan Khan and Sundar Dan Detha. The film was written and directed by Amit Kumar. The Bypass was filmed on a stranded road somewhere in Rajasth ...
'', a 2003 short silent Bollywood film
*
Railroad bypass
A railroad (or railway) cutoff (or cut-off) is a new railroad line built to replace or supplement an existing route, typically one where the old line is deficient for some reason.
Reasons and types
The term "cutoff" refers to the fact that the n ...
, a new railroad line built to replace or supplement an existing route
See also
*
*
*
Pass (disambiguation)
Pass, PASS, The Pass or Passed may refer to:
Places
*Pass, County Meath, a townland in Ireland
* Pass, Poland, a village in Poland
*Pass, an alternate term for a number of straits: see List of straits
* Mountain pass, a lower place in a mounta ...
{{disambiguation