replacement replacing | the act of furnishing an equivalent person or thing in the place of another, replacing the star will not be easy |
hormone replacement therapy hormoneeplacement therapy HRT | hormones (estrogen and progestin) are given to postmenopausal women, believed to protect them from heart disease and osteoporosis |
motor control | control of muscles |
aircraft engine | the engine that powers and aircraft |
automobile engine | the engine that propels an automobile |
automobile horn car horn motor horn horn hooter | a device on an automobile for making a warning noise |
auxiliary engine donkey engine | (nautical) a small engine (as one used on board ships to operate a windlass) |
camper camping bus motor home | a recreational vehicle equipped for camping out while traveling |
cooling system engine cooling system | equipment in a motor vehicle that cools the engine |
diesel diesel engine diesel motor | an internalombustion engine that burns heavy oil |
electric motor | a motor that converts electricity to mechanical work |
engine | motor that converts thermal energy to mechanical work |
engine | an instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc., medieval engines of war |
engine block cylinder block block | a metal casting containing the cylinders and cooling ducts of an engine, the engine had to be replaced because the block was cracked |
engineering engine room | a room (as on a ship) in which the engine is located |
externalombustion engine | a heat engine in which ignition occurs outside the chamber (cylinder or turbine) in which heat is converted to mechanical energy |
fanjet fan-jet fanjet engine turbojet turbojet engine turbofan turbofan engine | a jet engine in which a fan driven by a turbine provides extra air to the burner and gives extra thrust |
fire engine fire truck | any of various large trucks that carry firemen and equipment to the site of a fire |
four-stroke engine four-stroke internalombustion engine | an internalombustion engine in which an explosive mixture is drawn into the cylinder on the first stroke and is compressed and ignited on the second stroke, work is done on the third stroke and the products of combustion are exhausted on the fourth stroke |
gas engine | an internalombustion engine similar to a gasoline engine but using natural gas instead of gasoline vapor |
gasoline engine petrol engine | an internalombustion engine that burns gasoline, most automobiles are driven by gasoline engines |
heat engine | any engine that makes use of heat to do work |
internalombustion engine ICE | a heat engine in which combustion occurs inside the engine rather than in a separate furnace, heat expands a gas that either moves a piston or turns a gas turbine |
ion engine | a type of reaction-propulsion engine to propel rockets in space, a stream of positive ions is accelerated to a high velocity by an electric field |
jet engine | a gas turbine produces a stream of hot gas that propels a jet plane by reaction propulsion |
locomotive engine locomotive engine railway locomotive | a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks |
motor | machine that converts other forms of energy into mechanical energy and so imparts motion |
motor hotel motor inn motor lodge tourist court court | a hotel for motorists, provides direct access from rooms to parking area |
motor scooter scooter | a wheeled vehicle with small wheels and a low-powered gasoline engine geared to the rear wheel |
motor vehicle automotive vehicle | a self-propelled wheeled vehicle that does not run on rails |
outboard motor outboard | internalombustion engine that mounts at stern of small boat |
pilot engine | a locomotive that precedes a train to check the track |
power mower motor mower | a lawn mower powered by a gasoline motor |
PT boat mosquito boat mosquito craft motor torpedo boat | a small fast unarmored and lightly armed torpedo boat, P(atrol) T(orpedo) boat |
radial engine rotary engine | an internalombustion engine having cylinders arranged radially around a central crankcase |
ramjet ramjet engine atherodyde athodyd flying drainpipe | a simple type of jet engine, must be launched at high speed |
reaction-propulsion engine reaction engine | a jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream |
reciprocating engine | an internalombustion engine in which the crankshaft is turned by pistons moving up and down in cylinders |
rocket rocket engine | a jet engine containing its own propellant and driven by reaction propulsion |
rotary engine | an internalombustion engine in which power is transmitted directly to rotating components |
starter starter motor starting motor | an electric motor for starting an engine |
steam engine | externalombustion engine in which heat is used to raise steam which either turns a turbine or forces a piston to move up and down in a cylinder |
stepper stepping motor | a motor (especially an electric motor) that moves or rotates in small discrete steps |
switch engine donkey engine | a locomotive for switching rolling stock in a railroad yard |
synchronous motor | electric motor in which the speed of rotation is proportional to the frequency of the A.C. power |
tank engine tank locomotive | a locomotive that carries its own fuel and water, no tender is needed |
traction engine | steam-powered locomotive for drawing heavy loads along surfaces other than tracks |
valve-in-head engine | internalombustion engine having both inlet and exhaust valves located in the cylinder head |
Wankel engine Wankel rotary engine epitrochoidal engine | a rotary engine that is a four-stroke internalombustion engine without reciprocating parts |
wiper motor | electric motor that moves the windshield wiper |