WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a medium that was once supposed to fill all space and to support the propagation of electromagnetic waves
n. personification of the sky or upper air breathed by the Olympians; son of Erebus and night or of Chaos and darkness
Word Usage
"It will be shown that Clerk Maxwell also definitely affirms the atomicity of the aether, while Tyndall and Huyghens also use the term "_particles of aether_" over and over again."