1. propulsion

noun. (prəˈpʌlʃən) The act of propelling.
Synonyms
bowl act push pulling rolling deed drive forcing out launching shooting expulsion lob raise ejection pushing jumping launch jump human action thrust roll shot actuation heave dribbling driving force projection lift pull throw wheeling human activity dribble
Antonyms
behave discontinue refrain activity inactivity
Etymology
propulsion (English)
propulsio (Latin)
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2. propulsion

noun. (prəˈpʌlʃən) A propelling force.
Synonyms
nuclear propulsion force reaction propulsion
Antonyms
overact underact fail pull
Etymology
propulsion (English)
propulsio (Latin)

3. reaction

noun. (riːˈækʃən) (chemistry) a process in which one or more substances are changed into others.
Synonyms
photochemical reaction endothermic reaction chemical decomposition reaction chemical reaction redox metathesis neutralisation decomposition reducing neutralization reaction oxidation neutralization chemical action double decomposition reaction chemical process hydrolysis chemical change displacement reaction aldol reaction saponification reduction displacement equilibrium chain reaction elimination reaction oxidization double decomposition exothermic reaction neutralisation reaction decomposition reaction oxidoreduction oxidation-reduction chemical equilibrium addition reaction oxidisation
Antonyms
unsatisfactory voluntary fall short of disagree question
Etymology
reaction (English)
reaction (Old French (842-ca. 1400))
reactio (Latin)
actio (Latin)
-tio (Latin)
actum (Latin)
ago (Latin)
actus (Latin)
re- (Latin)

4. reaction

noun. (riːˈækʃən) An idea evoked by some experience.
Synonyms
thought idea
Antonyms
inactiveness dormant inaction
Etymology
reaction (English)
reaction (Old French (842-ca. 1400))
reactio (Latin)
actio (Latin)
-tio (Latin)
actum (Latin)
ago (Latin)
actus (Latin)
re- (Latin)

5. reaction

noun. (riːˈækʃən) A bodily process occurring due to the effect of some antecedent stimulus or agent.
Synonyms
taxis galvanic skin response psychogalvanic response physiological reaction bodily process electrodermal response innate reflex passage double take tropism inborn reflex learned response transfusion reaction activity reflex action unconditioned reflex kinesis overreaction rebound bodily function passing electrical skin response reflex response immunologic response Tarchanoff phenomenon automatism learned reaction reflex immune response answer immune reaction GSR response Fere phenomenon instinctive reflex body process
Antonyms
inactivity discontinuance activation sink source
Etymology
reaction (English)
reaction (Old French (842-ca. 1400))
reactio (Latin)
actio (Latin)
-tio (Latin)
actum (Latin)
ago (Latin)
actus (Latin)
re- (Latin)

6. reaction

noun. (riːˈækʃən) Extreme conservatism in political or social matters.
Synonyms
conservativism conservatism
Antonyms
passive active birth
Etymology
reaction (English)
reaction (Old French (842-ca. 1400))
reactio (Latin)
actio (Latin)
-tio (Latin)
actum (Latin)
ago (Latin)
actus (Latin)
re- (Latin)

7. engine

noun. (ˈɛndʒən, ˈɪndʒən) Motor that converts thermal energy to mechanical work.
Synonyms
reaction-propulsion engine geartrain reaction engine power train gear motor auxiliary engine donkey engine automobile engine train gearing camshaft heat engine generator aircraft engine
Antonyms
disqualify walk large big unattractive
Etymology
engine (English)
engin (Middle English (1100-1500))
engin (Old French (842-ca. 1400))
ingenium (Latin)

8. engine

noun. (ˈɛndʒən, ˈɪndʒən) Something used to achieve a purpose.
Synonyms
causal agent cause causal agency
Etymology
engine (English)
engin (Middle English (1100-1500))
engin (Old French (842-ca. 1400))
ingenium (Latin)

9. engine

noun. (ˈɛndʒən, ˈɪndʒən) A wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks.
Synonyms
self-propelled vehicle fender buffer steam locomotive railroad train electric locomotive railway locomotive dinkey switch engine locomotive donkey engine locomotive engine train footplate iron horse traction engine cowcatcher diesel locomotive tank locomotive shunter choo-choo pilot dinky tank engine pilot engine
Antonyms
dissuade
Etymology
engine (English)
engin (Middle English (1100-1500))
engin (Old French (842-ca. 1400))
ingenium (Latin)

10. engine

noun. (ˈɛndʒən, ˈɪndʒən) An instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc..
Synonyms
mangonel ballista battering ram bricole instrument arbalist onager trebuchet trebucket catapult arbalest
Antonyms
stay in place afferent noncausative stator rotor
Etymology
engine (English)
engin (Middle English (1100-1500))
engin (Old French (842-ca. 1400))
ingenium (Latin)
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