| 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 |
central chimpanzee
Pan troglodytes troglodytes | black-faced chimpanzees of central Africa, closely related to eastern chimpanzees |
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 |
central
telephone exchange
exchange | a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication |
| central heating | a heating system in which air or water is heated at a central furnace and sent through the building via vents or pipes and radiators |
central processing unit
CPU
C.P.U.
central processor
processor
mainframe | (computer science) the part of a computer (a microprocessor chip) that does most of the data processing, the CPU and the memory form the central part of a computer to which the peripherals are attached |
clack valve
clack
clapper valve | a simple valve with a hinge on one side, allows fluid to flow in only one direction |
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 |
headquarters central office
main office
home office
home base | (usually plural) the office that serves as the administrative center of an enterprise, many companies have their headquarters in New York |
| heart valve | an implant that replaces a natural cardiac valve |
| intake valve | a valve that controls the flow of fluid through an intake |
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 |
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 |
fissure of Rolando
Rolando's fissure
central sulcus
sulcus centralis | a brain fissure extending upward on the lateral surface of both hemispheres, separates the frontal and parietal lobes |
central artery of the retina
arteria centralis retinae | a branch of the ophthalmic artery, enters the eyeball with the optic nerve |
central veins of liver
venae centrales hepatis | terminal branches of the hepatic veins that lie in the hepatic lobules and receive blood from the liver sinusoids |
central vein of retina
vena centrales retinae | vein formed by the union of the retinal veins, accompanies central arteries of the retina in the optic nerve |
central vein of suprarenal gland
vena centralis glandulae suprarenalis | a single draining vein, on the right it empties into the inferior vena cava, on the left it empties into the left renal vein |
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 |
centrosome
central body | small region of cytoplasm adjacent to the nucleus, contains the centrioles and serves to organize the microtubules |
central nervous system
CNS
systema nervosum centrale | the portion of the vertebrate nervous system consisting of the brain and spinal cord |
| central gyrus | either of two gyri on either side of the central sulcus |
| 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 |
| central vision | vision using the fovea and parafovea, the middle part of the visual field |
Thai
Siamese
Central Thai | a branch of the Tai languages |
| South-Central Dravidian | a Dravidian language spoken primarily in south central India |
| Central Dravidian | a Dravidian language spoken primarily in central India |
Central Intelligence Agency
CIA | an independent agency of the United States government responsible for collecting and coordinating intelligence and counterintelligence activities abroad in the national interest, headed by the Director of Central Intelligence under the supervision of the President and National Security Council |
| Central Powers | in World War I the alliance of Germany and Austria-Hungary and other nations allied with them in opposing the Allies |
| Central America | the nations of Central America collectively |
Central Intelligence Machinery
CIM | the United Kingdom's central unit for the tasking and coordination and funding of intelligence and security agencies |