vacuum energy
Background energy in a vacuum associated with constant vacuum fluctuations. Some astronomers believe vacuum energy to be the source of energy for the apparent acceleration of the expansion of the universe.
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Nearby words
- vacuum cleaner,
- vacuum coffee maker,
- vacuum concrete,
- vacuum distillation,
- vacuum drying,
- vacuum flask,
- vacuum fluctuation,
- vacuum forming,
- vacuum frame,
- vacuum gauge
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.