PERPETUAL MOTION MACHINE

Pronunciation (US):

(GB):

IPA (US):

 Dictionary entry overview: What does perpetual motion machine mean? 

• PERPETUAL MOTION MACHINE (noun)
  The noun PERPETUAL MOTION MACHINE has 1 sense:

1. a machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy

  Familiarity information: PERPETUAL MOTION MACHINE used as a noun is very rare.

 Dictionary entry details 

• PERPETUAL MOTION MACHINE (noun)

Sense 1

Meaning:

A machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy

Classified under:

Nouns denoting man-made objects

Hypernyms ("perpetual motion machine" is a kind of...):

machine (any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks)