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- Dictionarypump/pʌmp/
noun
- 1. a mechanical device using suction or pressure to raise or move liquids, compress gases, or force air into inflatable objects such as tyres: "a petrol pump"
- 2. an active transport mechanism in living cells by which specific ions are moved through the cell membrane against a concentration gradient: "the bacterium's sodium pump"
verb
- 1. force (liquid, gas, etc.) to move by or as if by means of a pump: "the blood is pumped around the body" Similar
- 2. draw (milk) from the breast using a breast pump, typically in order to feed a baby by means of a bottle: "she struggled with pumping enough milk"
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a piece of equipment that is used to cause liquid, air, or gas to move from one place to another: a water / bicycle / fuel pump. a petrol pump. Fewer examples. The pump is powered by a small electric motor. Fish tanks often have a pump that oxygenates the water. The pump is driven by steam. SMART Vocabulary: related words and phrases.
A pump is a device that moves fluids ( liquids or gases ), or sometimes slurries, [1] by mechanical action, typically converted from electrical energy into hydraulic energy.
The meaning of PUMP is a device that raises, transfers, delivers, or compresses fluids or that attenuates gases especially by suction or pressure or both. How to use pump in a sentence.
noun. any device for compressing, driving, raising, or reducing the pressure of a fluid, esp by means of a piston or set of rotating impellers. biology a mechanism for the active transport of ions, such as protons, calcium ions, and sodium ions, across cell membranes. a sodium pump.
A pump is a machine or device that is used to force a liquid or gas to flow in a particular direction. ...pumps that circulate the fuel around in the engine. There was no water in the building, just a pump in the courtyard. You'll need a bicycle pump to keep the tyres topped up with air. 2. verb.
pump, a device that expends energy in order to raise, transport, or compress fluids. The earliest pumps were devices for raising water, such as the Persian and Roman waterwheels and the more sophisticated Archimedes screw ( q.v. ).
n. 1. A machine or device for raising, compressing, or transferring fluids. 2. Physiology A molecular mechanism for the active transport of ions or molecules across a cell membrane. 3. Physics Electromagnetic radiation used to raise atoms or molecules to a higher energy level. 4. Informal The heart. 5.
