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1. One that impels, as a rotating device used to force a fluid in a desired direction under pressure.
2. A rotor or rotor blade.


1. (General Engineering) the vaned rotating disc of a centrifugal pump, compressor, etc
2. (General Engineering) a compressor or centrifugal pump having such an impeller


(ɪmˈpɛl ər)

1. one that impels.
2. a rotor for transmitting motion, as in a centrifugal pump, turbine, or fluid coupling.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.impeller - the blade of a rotor (as in the compressor of a jet engine)impeller - the blade of a rotor (as in the compressor of a jet engine)
vane, blade - flat surface that rotates and pushes against air or water
rotor - rotating mechanism consisting of an assembly of rotating airfoils; "there are horizontal rotors on a helicopter or compressor rotors in a jet engine"
References in periodicals archive ?
The result is a final finish (no hand grinding), propeller or impellor that is precise enough to exceed ISO 484 Class S specifications.
Turbotech Precision Products manufactures impellor and compressor wheel castings in aluminium alloys for industries including automotive, aerospace, heating, ventilation and air-conditioning, vacuum and other air-flow applications.
Typically, the best solution for dealing with porosity is to reduce hydrogen and oxides prior to casting via a treatment combining automated cleaning flux addition with rotary impellor degassing.
Their study has shown no weight loss measured after testing 2% (volume), 170 nm SiC/water for more than 700 hours at 8 m/s velocity, that is, no damage to the impellor of a commercial automobile water pump.
For maintenance most of the key points are to hand - impellor. oil and water filter while from the guest cabin a wide hatch cover gives good side access to other items including the dipstick and 90ah AGM starting battery; while dual I 65ah AGM house batteries are under the portside settee.
The gas is lead to flow across a vane or impellor, which basically spins in proportion to the flow rate.
The latest high-performance centrifugal chiller has three characteristics: a high-efficiency compressor (aerodynamic performance is improved by the impellor and static channel), high-efficiency heat exchangers and high-level arithmetic control.
Discharge was rated at the stations using manual current measurements from a Columbia impellor meter approximately every second day (n = 24 West, n = 25 East) throughout the season, and resulted in well-constrained rating curves ([r.sup.2] = 0.84 and 0.89.
Mixers can be specified with a wide range of mixing devices to suit the application, these include patented impellor designs, turbines, anchors, ribbons and twin movement options.
Magnetic levitation is the application of passive and active magnetic fields to suspend and control a titanium impellor that gently sweeps the blood through the pump, augmenting the function of the patient's left ventricle.
As an alternative to the standard cone and shear plate configuration, Lee can now offer an impellor in place of the cone in the head assembly for additional pumping power.