definitions

engine

[ en-juh n ]
/ ˈɛn dʒən /
|
SEE MORE SYNONYMS FOR engine ON THESAURUS.COM

noun

a machine for converting thermal energy into mechanical energy or power to produce force and motion.
a railroad locomotive.
a fire engine.
any mechanical contrivance.
a machine or instrument used in warfare, as a battering ram, catapult, or piece of artillery.
Obsolete. an instrument of torture, especially the rack.

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RELATED WORDS

generator, tool, appliance, instrument, motor, weapon, transformer, diesel, turbine, cylinder, apparatus, means, pot, mechanism, fan, contrivance, agent, dynamo, barrel, implement

Nearby words

engels, friedrich, engender, enghien, d', engild, engin., engine, engine company, engine driver, engine house, engine pod, engine room

Origin of engine

1250–1300; Middle English engin < Anglo-French, Old French < Latin ingenium nature, innate quality, especially mental power, hence a clever invention, equivalent to in- in-2 + -genium, equivalent to gen- begetting (see kin) + -ium -ium

Related forms

en·gine·less, adjectivemul·ti·en·gine, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for engine

British Dictionary definitions for engine

engine

/ (ˈɛndʒɪn) /

noun

any machine designed to convert energy, esp heat energy, into mechanical worka steam engine; a petrol engine
  1. a railway locomotive
  2. (as modifier)the engine cab
military any of various pieces of equipment formerly used in warfare, such as a battering ram or gun
obsolete any instrument or deviceengines of torture

Word Origin for engine

C13: from Old French engin, from Latin ingenium nature, talent, ingenious contrivance, from in- ² + -genium, related to gignere to beget, produce
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

Science definitions for engine

engine

[ ĕn′jĭn ]

A machine that turns energy into mechanical force or motion, especially one that gets its energy from a source of heat, such as the burning of a fuel. The efficiency of an engine is the ratio between the kinetic energy produced by the machine and the energy needed to produce it. See more at internal-combustion engine steam engine. See also motor.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.