dark energy
Also found in: Acronyms, Encyclopedia, Wikipedia.
Related to dark energy: dark matter, black hole
dark energy
n.
A hypothetical form of energy that permeates all space and tends to cause the universe to expand by exerting a gravitational repulsion, countering ordinary gravitational attraction. Quintessence and the vacuum energy represented by the cosmological constant are possible forms of dark energy.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
dark energy
n
(Astronomy) astronomy unobserved energy whose existence is proposed to account for the observed acceleration in the expansion of the universe
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014