conservation of energy

noun

, Physics.

1. the principle that in a system that does not undergo any force from outside the system, the amount of energy is constant, irrespective of its changes in form.

conservation of energy

noun

1. the principle that the total energy of any isolated system is constant and independent of any changes occurring within the system

conservation of energy

1. A principle stating that the total energy of a closed system remains constant over time, regardless of other possible changes within the system. It is related to the symmetry of time invariance.
2. See also invariance

Word History and Origins

Origin of conservation of energy¹

First recorded in 1850–55

Example Sentences

We have already seen that Dr. Mayer, of conservation-of-energy fame, was the first to ask this question.

From Project Gutenberg