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.

Nearby words

  1. vacuum cleaner,
  2. vacuum coffee maker,
  3. vacuum concrete,
  4. vacuum distillation,
  5. vacuum drying,
  6. vacuum flask,
  7. vacuum fluctuation,
  8. vacuum forming,
  9. vacuum frame,
  10. vacuum gauge

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.