- a device having a revolving hub with radiating blades, for propelling an airplane, ship, etc.
- a person or thing that propels.
- the bladed rotor of a pump that drives the fluid axially.
- a wind-driven, usually three-bladed, device that provides mechanical energy, as for driving an electric alternator in wind plants.
Origin of propeller
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for propeller
Children have fantasy lives so rich and combustible that rigging them with lies is like putting a propeller on a rocket.Why Jimmy Kimmel’s Lies Matter
November 19, 2013
There are some features, however, which may be safely adopted in propeller selection.
The total weight of the monoplane with engine and propeller is 352 pounds.
Much of the efficiency of the motor is due to the form and gearing of the propeller.
The "thrust" of the propeller is also extraordinary, being between 250 and 260 pounds.
The propeller has four blades which are but little wider than a lath.
- a device having blades radiating from a central hub that is rotated to produce thrust to propel a ship, aircraft, etc
- a person or thing that propels
Word Origin and History for propeller
1780, "anything that propels," agent noun from propel. In mechanical sense, 1809, of ships; of flying machines (in a broad, theoretical sense) 1842, in the specific modern sense 1853.
Online Etymology Dictionary, © 2010 Douglas Harper
- A device consisting of a set of two or more twisted, airfoil-shaped blades mounted around a shaft and spun to provide propulsion of a vehicle through water or air, or to cause fluid flow, as in a pump. The lift generated by the spinning blades provides the force that propels the vehicle or the fluid-the lift does not have to result in an actual upward force; its direction is simply parallel to the rotating shaft.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.