Definition of conservation of energy in English:

conservation of energy

Syllabification: con·ser·va·tion of en·er·gy

Entry from US English dictionary

noun

A principle stating that energy cannot be created or destroyed, but can be altered from one form to another.

Definition of conservation of energy in:

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Word of the day deictic
Pronunciation: ˈdeɪktɪk
adjective
denoting a word whose meaning depends on context...