prime mover

noun
Updated on: 15 Nov 2017

Definition of prime mover

1 a :an initial source of motive power (such as a windmill, waterwheel, turbine, or internal combustion engine) designed to receive and modify force and motion as supplied by some natural source and apply them to drive machinery
b :a powerful tractor or truck usually with all-wheel drive
2 :the self-moved being that is the source of all motion
3 :the original or most effective force in an undertaking or work
  • education is … a prime mover of cultural and societal change
  • —R. C. Buck

Examples of prime mover in a Sentence

  1. She was the prime mover behind the town's annual summer festival.

Recent Examples of prime mover from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'prime mover.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of prime mover

translation of Medieval Latin primus motor


PRIME MOVER Defined for English Language Learners

prime mover

noun

Definition of prime mover for English Language Learners

  • : a person or thing that starts something or that has a very powerful influence on something


Medical Dictionary

prime mover

noun \ ˈprīm-ˈmü-vər \

medical Definition of prime mover

:agonist 1

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