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energy density

American  

noun

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


energy density Scientific  
  1. See under density


Etymology

Origin of energy density

First recorded in 1955–60

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

To reach that goal, however, the battery will need further improvements in low-temperature charging and energy density.

From Science Daily Jun. 21, 2026

New battery tech must compete on lifespan, durability, energy density, safety and cost—which is dependent on massive scale.

From The Wall Street Journal Jun. 19, 2026

In a paper published in February, she and colleagues described the most promising energy storage system of this kind to date, at least in terms of its energy density.

From BBC May 7, 2026

Green methanol, however, has a low energy density and takes up cargo space.

From Barron's Nov. 18, 2025

Thus their energy is counted over and over again and the energy density will become very large.

From "A Brief History of Time: And Other Essays" by Stephen Hawking

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