Pump and dump — is a form of microcap fraud that involves artificially inflating the price of a stock through false and misleading positive statements, in order to sell the cheaply purchased stock at a higher price. Once the operators of the scheme dump their… … Wikipedia
pump — pump1 [pump] n. [ME pumpe < MDu pompe < Sp bomba, prob. of echoic orig.] 1. any of various machines that force a liquid or gas into or through, or draw it out of, something, as by suction or pressure 2. Informal the heart vt. 1. to raise or … English World dictionary
pump — pump1 pumpable, adj. pumpless, adj. pumplike, adj. /pump/, n. 1. an apparatus or machine for raising, driving, exhausting, or compressing fluids or gases by means of a piston, plunger, or set of rotating vanes. 2. Engin., Building Trades. a shore … Universalium
pump — a fish pump is a mechanism for transferring large volumes of relatively small fish in water from a net into a ship by means of a pump and associated flexible pipes while a fishing pump is used to catch fish attracted by lights … Dictionary of ichthyology
Vacuum pump — A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke. Types Pumps can be broadly categorized according to three… … Wikipedia
Diffusion pump — Six inch oil diffusion pump. Diffusion pumps use a high speed jet of vapor to direct gas molecules in the pump throat down into the bottom of the pump and out the exhaust. Presented in 1915 by Wolfgang Gaede[1] and using mercury vapor, they were… … Wikipedia
Geothermal heat pump — A geothermal heat pump system is a heating and/or an air conditioning system that uses the Earth s ability to store heat in the ground and water thermal masses. These systems operate based on the stability of underground temperatures: the ground… … Wikipedia
Charge pump — 2 stage charge pump with DC voltage supply and a pump control signal S0 A charge pump is a kind of DC to DC converter that uses capacitors as energy storage elements to create either a higher or lower voltage power source. Charge pump circuits… … Wikipedia
Proton pump — This article is about proton pumps in general. For the proton P type ATPase, see proton ATPase. A proton pump is an integral membrane protein that is capable of moving protons across the membrane of a cell, mitochondrion, or other subcellular… … Wikipedia
Insulin pump — Insulin pump, showing an infusion set loaded into spring loaded insertion device. A reservoir is attached to the infusion set (shown here removed from the pump) … Wikipedia