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thruster

[thruhs-ter]
noun
  1. a person or thing that thrusts.
  2. Fox Hunting. a rider who keeps in the front of the field.
  3. Aerospace. a small rocket attached to a spacecraft and used to control its attitude or translational motion.
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Origin of thruster

First recorded in 1590–1600; thrust + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for thruster

thruster

noun
  1. a person or thing that thrusts
  2. Also called: vernier rocket a small rocket engine, esp one used to correct the altitude or course of a spacecraft
  3. an auxiliary propeller on a ship, capable of acting athwartships
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012