| valve | one of the paired hinged shells of certain molluscs and of brachiopods |
| valve | the entire one-piece shell of a snail and certain other molluscs |
accelerator
throttle
throttle valve | a valve that regulates the supply of fuel to the engine |
| ball valve | any valve that checks flow by the seating of a ball |
| butterfly valve | a valve in a carburetor that consists of a disc that turns and acts as a throttle |
clack valve
clack
clapper valve | a simple valve with a hinge on one side, allows fluid to flow in only one direction |
column
pillar a | (architecture) a tall vertical cylindrical structure standing upright and used to support a structure |
| column pillar | a vertical cylindrical structure standing alone and not supporting anything (such as a monument) |
| column chromatography column | a vertical glass tube used in column chromatography, a mixture is poured in the top and washed through a stationary substance where components of the mixture are adsorbed selectively to form colored bands |
diode rectifying tube
rectifying valve | a thermionic tube having two electrodes, used as a rectifier |
| exhaust valve | a valve through which burned gases from a cylinder escape into the exhaust manifold |
| heart valve | an implant that replaces a natural cardiac valve |
| intake valve | a valve that controls the flow of fluid through an intake |
lally
lally column | support column consisting of a steel cylinder filled with concrete |
poppet
poppet valve | a mushroom-shaped valve that rises perpendicularly from its seat, commonly used in internalombustion engines |
rocker arm
valve rocker | a lever pivoted at the center, used especially to push a valve down in an internalombustion engine |
safety valve
relief valve
escape valve
escape cock
escape | a valve in a container in which pressure can build up (as a steam boiler), it opens automatically when the pressure reaches a dangerous level |
| slide valve | valve that opens and closes a passageway by sliding over a port |
sluicegate
sluice valve
floodgate
penstock head gate water gate | regulator consisting of a valve or gate that controls the rate of water flow through a sluice |
| support column | a column that supports a heavy weight |
tube vacuum tube
thermionic vacuum tube
thermionic tube
electron tube
thermionic valve | electronic device consisting of a system of electrodes arranged in an evacuated glass or metal envelope |
| valve | control consisting of a mechanical device for controlling the flow of a fluid |
| valve | device in a brass wind instrument for varying the length of the air column to alter the pitch of a tone |
| valve-in-head engine | internalombustion engine having both inlet and exhaust valves located in the cylinder head |
mitral valve
bicuspid valve
left atrioventricular valve | valve with two cusps, situated between the left atrium and the left ventricle |
tricuspid valve
right atrioventricular valve | valve with three cusps, situated between the right atrium and the right ventricle, allows blood to pass from atrium to ventricle and closes to prevent backflow when the ventricle contracts |
| atrioventricular valve | either of two heart valves through which blood flows from the atria to the ventricles, prevents return of blood to the atrium |
| aortic valve | a semilunar valve between the left ventricle and the aorta, prevents blood from flowing from the aorta back into the heart |
| pulmonary valve | a semilunar valve between the right ventricle and the pulmonary artery, prevents blood from flowing from the artery back into the heart |
| semilunar valve | a heart valve with cusps shaped like half-moons, prevents blood from flowing back into the heart |
heart valve
cardiac valve | a valve to control one-way flow of blood |
| valve | a structure in a hollow organ (like the heart) with a flap to insure one-way flow of fluid through it |
| ileocecal valve | valve between the ileum of the small intestine and the cecum of the large intestine, prevents material from flowing back from the large to the small intestine |
pyloric sphincter
pyloric valve
musculus sphincter pylori | the sphincter muscle of the pylorus that separates the stomach from the duodenum |
| column | any tubular or pillar-like supporting structure in the body |
spinal column
vertebral column
spine
backbone
back rachis | the series of vertebrae forming the axis of the skeleton and protecting the spinal cord, the fall broke his back |
| column | a page or text that is vertically divided, the newspaper devoted several columns to the subject, the bookkeeper used pages that were divided into columns |
column
editorial
newspaper column | an article giving opinions or perspectives |
| agony column | a newspaper column devoted to personal problems |
fifth column
Trojan horse | a subversive group that supports the enemy and engages in espionage or sabotage, an enemy in your midst |
| column | a line of units following one after another |
| column | a vertical array of numbers or other information, he added a column of numbers |
| column chromatography | chromatography that uses selective adsorption by a column of powders |
column inch
inch | a unit of measurement for advertising space |
column tower
pillar | anything that approximates the shape of a column or tower, the test tube held a column of white powder, a tower of dust rose above the horizon, a thin pillar of smoke betrayed their campsite |
| mitral valve prolapse | cardiopathy resulting from the mitral valve not regulating the flow of blood between the left atrium and left ventricle of the heart |
mitral stenosis
mitral valve stenosis | obstruction or narrowing of the mitral valve (as by scarring from rheumatic fever) |