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pressure drag


      n   the part of the total drag of a body moving through a gas or liquid caused by the components of the pressures at right angles to the surface of the body  
Dictionnaire anglais Collins English definition-Thesaurus  
1    the state of pressing or being pressed  
2    the exertion of force by one body on the surface of another  
3    a moral force that compels  
to bring pressure to bear     
4    an urgent claim or demand or series of urgent claims or demands  
to work under pressure     
5    a burdensome condition that is hard to bear  
the pressure of grief     
6    the force applied to a unit area of a surface, usually measured in pascals (newtons per square metre), millibars, torr, or atmospheres.,   (Symbol)    p, P  
7       short for       atmospheric pressure       blood pressure  
8    tr   to constrain or compel, as by the application of moral force  
9       another word for       pressurize  
     (C14: from Late Latin pressura a pressing, from Latin premere to press)  
  pressureless      adj  

adverse pressure gradient  
      n     (Aerodynamics)   an increase of pressure in the direction of flow  
atmospheric pressure  
      n   the pressure exerted by the atmosphere at the earth's surface. It has an average value of 1 atmosphere  
back pressure  
1      (Engineering)   the pressure that opposes the motion of a piston on its exhaust stroke in an internal-combustion engine  
2      (Med)   the local pressure that builds up when fluid flow is obstructed in the cardiovascular or urinary systems  
barometric pressure  
      n   atmospheric pressure as indicated by a barometer  
blood pressure  
      n   the pressure exerted by the blood on the inner walls of the arteries, being relative to the elasticity and diameter of the vessels and the force of the heartbeat  
centre of pressure  
1      (Physics)   the point in a body at which the resultant pressure acts when the body is immersed in a fluid  
2      (Aeronautics)   the point at which the resultant aerodynamic forces intersect the chord line of the aerofoil  
critical pressure  
      n   the pressure of a gas or the saturated vapour pressure of a substance in its critical state  
favourable pressure gradient  
      n     (Engineering)   a decrease of pressure in the direction of flow  
fluid pressure  
      n   the pressure exerted by a fluid at any point inside it. The difference of pressure between two levels is determined by the product of the difference of height, the density, and the acceleration of free fall  
1    having, using, involving, or designed to withstand a pressure above normal pressure  
a high-pressure gas, a high-pressure cylinder     
2    Informal   (of selling) persuasive in an aggressive and persistent manner  
1    having, using, or involving a pressure below normal  
a low-pressure gas     
2    relaxed or calm  
osmotic pressure  
      n   the pressure necessary to prevent osmosis into a given solution when the solution is separated from the pure solvent by a semipermeable membrane  
partial pressure  
      n   the pressure that a gas, in a mixture of gases, would exert if it alone occupied the whole volume occupied by the mixture  
pressure cabin  
      n   the pressurized cabin of an aircraft or spacecraft  
      vb   to cook (food) in a pressure cooker  
pressure cooker  
1    a strong hermetically sealed pot in which food may be cooked quickly under pressure at a temperature above the normal boiling point of water  
2      (N.Z.)  
informal   a trainee student attending a shortened qualifying course  
pressure drag  
      n   the part of the total drag of a body moving through a gas or liquid caused by the components of the pressures at right angles to the surface of the body  
pressure gauge  
      n   any instrument for measuring fluid pressure  
   See also       Bourdon gauge       manometer  
pressure gradient  
1    the change of pressure per unit distance  
   See       adverse pressure gradient       favourable pressure gradient  
2      (Meteorol)   the decrease in atmospheric pressure per unit of horizontal distance, shown on a synoptic chart by the spacing of the isobars  
pressure group  
      n   a group of people who seek to exert pressure on legislators, public opinion, etc., in order to promote their own ideas or welfare  
pressure head  
      n     (Physics)      a more formal name for       head       24a  
pressure point  
      n   any of several points on the body above an artery that, when firmly pressed, will control bleeding from the artery at a point farther away from the heart  
pressure suit  
      n   an inflatable suit worn by a person flying at high altitudes or in space, to provide protection from low pressure  
pressure vessel  
      n     (Engineering)   a vessel designed for containing substances, reactions, etc., at pressures above atmospheric pressure  
vapour pressure  
      n     (Physics)   the pressure exerted by a vapour, esp. that exerted by a vapour in equilibrium with its solid or liquid phase at a particular temperature  

Dictionnaire anglais Collins English definition-Thesaurus  



1    compressing, compression, crushing, force, heaviness, squeezing, weight  
2    coercion, compulsion, constraint, force, influence, obligation, power, sway  
3    adversity, affliction, burden, demands, difficulty, distress, exigency, hassle     (informal)   heat, hurry, load, press, strain, stress, urgency  

high-pressure        (of salesmanship)  
aggressive, bludgeoning, coercive, compelling, forceful, high-powered, importunate, insistent, intensive, in-your-face     (slang)   persistent, persuasive, pushy     (informal)  

Dictionnaire anglais Collins English synonyme-Thesaurus  

Dictionnaire Collaboratif     Anglais Définition
a column of air whirling around and towards a more or less vertical axis of low pressure, which moves along the land or ocean surface
be under an extreme pressure; be anxious, worried or frightened
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