valve
15
8.6
- noun
- /vælv/
- Specialized
:
valva
- When collecting snails, I found a perfect specimen with both valves intact.
- mitral valve
- heart valves
- aortic valve
Examples
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Other causes include hypertension, valve disease, and atrial fibrillation.
Academic text (2011) -
In less than 20 minutes, the upper pipe section and the broken valve were removed and lifted out of the way.
Academic text (2011) -
I have a genetic mitral valve prolapse.
-
Do you want to scrub in on an aortic valve replacement?
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Narrow or floppy heart valves put extra stress on the heart.
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The heart contains two atria, two ventricles... and four valves.
-
During the procedure, the patient's defective valve was trimmed and reconstructed.
Academic text (1998) -
The shell of the mussel consists of two parts, each known as a valve.
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In biology class, we learned that each valve in a bivalve mollusc serves as a protective shell.
Compounds
- Specialized
7
4.4
A valve in the left side of the heart that stops blood flowing backward
- Specialized
5
4.8
A part in the heart that stops blood flowing back into the left chamber
- Specialized
2
3.5
A flap in the heart that lets blood flow one way and stops it flowing back
- Specialized
1
3.7
A part on a boiler or similar machine that automatically lets out steam when pressure gets too high
- Specialized
1
3.8
An artificial device in the heart that takes the place of a damaged part that controls blood flow
- Specialized
1
4.8
The part of the heart with three flaps that stops blood flowing back into the right upper chamber
- Specialized
1
6.0
A valve with a flat disc that turns to control or stop the flow of water and air
- Specialized
1
4.1
A device that controls the flow of water or gas using a round ball inside
- Specialized
1
4.7
A valve in a car engine that lets hot gases from the cylinder go outside
- Specialized
1
5.6
The valve between the left chambers of the heart does not close, letting blood leak backward
- Specialized
1
8.0
A small muscle that controls flow from the small intestine into the large intestine
- Specialized
A heart part with two flaps between the left upper and left lower chambers that controls blood flow
- Specialized
A valve in the heart that makes blood flow one way between chambers and major vessels
- Specialized
A simple device with a hinged flap that lets liquid flow in one direction and stops it flowing back
- Specialized
A device that opens by itself to let out extra pressure and prevent explosions
- Specialized
A valve between an upper and lower heart chamber that lets blood flow one way
- Specialized
A heart valve with two flaps that lets blood move from the left atrium to the left ventricle without backflow
- Specialized
A condition where the heart valve between the left upper and lower chambers becomes narrow and slows blood flow
- Specialized
A valve between the heart's right side and the vessel to the lungs that stops blood flowing back
- Specialized
A ring of muscle at the lower end of the stomach that lets food pass into the small intestine
- Archaic
An electronic tube that changes a back-and-forth flow of electricity into a one-way flow
- Specialized
A valve with three flaps between the right upper and lower chambers of the heart that stops blood flowing backward
- Specialized
A part that opens by itself to let out pressure and prevent an accident
- Specialized
A disc-shaped engine part that moves up and down to open or close a hole for gases
- Specialized
A part of the heart with moon-shaped flaps that stops blood flowing back after each beat
- Archaic
An electronic device in a sealed glass tube that controls electric current in old radios
- Specialized
A part that controls how much air and fuel go into an engine to change its speed or power
- Specialized
A device that controls the flow of a liquid or gas by sliding over an opening
- Specialized
An engine with the parts that let air in and let exhaust out at the top of the cylinders
Surface Forms
Etymology
Valve comes from the old Latin word valva meaning 'leaf' or 'door', and the shell part was seen like a little 'door' that closes to protect the animal. You can see the same idea in the word bivalve ('bi-' = two), which helps explain why shell pieces are called valves.