phantom energy

Etymology 1
. From the mysterious nature of this energy loss.

Noun

 * 1)  The energy that is lost due to standby electronic activity of equipment that is "off", on standby or sleep mode.

Etymology 2
Coined by physicist in 1998, in reference to the Star Wars movie Star Wars: Episode I: The Phantom Menace, in his paper "A Phantom Menace? Cosmological consequences of a dark energy component with super-negative equation of state" referring to the phantom energy menace that would lead to the Big Rip.

Noun

 * 1)  A category of dark energy, where dark energy is not fixed in amount nor in density, and continuously increases over time.

Coordinate terms

 * a category of dark energy
 * a category of dark energy, where dark energy is constant in density