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proparoxytone
propel
propellant
propellent
propeller
propeller-head
propeller shaft
propelling pencil
propene
propenoic acid
propensity
proper
proper adjective
proper fraction
proper motion
proper noun
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propene

pro·pene [ prṓ pn ]


noun 
Definition:
 
chemistry 
Same as  propylene


[Mid-19th century. <propyl]
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