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mo·tion

motion

 
 
pronunciation:
mo shn
features:
Word Combinations (noun), Word Explorer
part of speech: noun
definition: the act of moving or changing places.
The motion of the car made me sick.
similar words:
action, activity, play, progress
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derivations: motionless (adj.), motionlessly (adv.), motionlessness (n.)
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See
  physics