energy density

noun

1. the amount of energy stored in a given system or region of space per unit volume.

energy density

1. See under density

Word History and Origins

Origin of energy density¹

First recorded in 1955–60

Example Sentences

The energy density of the keto diet in the new study was comparable to that of the highly processed diet in his previous study, Hall said, but subjects on the keto diet didn’t overeat, while subjects on the processed diet did.

From Washington Post

Volumetrics diet -- TIEThe idea here is to pick foods with low energy density.

From Popular-Science

That means that nearly every electron can be put to work storing energy, which is what accounts for the greater energy density potential.

From MIT Technology Review

Numerous researchers and companies are exploring solid-state technology for a variety of battery chemistries because this approach has the potential to improve safety and energy density, though developing a practical version has proved difficult.

From MIT Technology Review

Today's cells are cheaper than they've ever been, but lithium-ion still leaves a lot to be desired in terms of energy density compared to liquid hydrocarbon fuels.

From Ars Technica

Even with that four-fold advantage in efficiency, gasoline still has 20 times the energy density of batteries.

From The Daily Beast

On a gravimetric basis, gasoline has 80 times the energy density of the best lithium-ion batteries.

From The Daily Beast