from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A form of matter hypothesized by proponents of the big bang theory to have existed before the formation of the chemical elements.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. In the Big Bang theory, the hot and dense plasma of which the cosmos consisted at the time of recombination in an early stage of its expansion and cooling, when the first atoms formed and photons decoupled, the source of the cosmic background radiation.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (cosmology) the original matter that (according to the big bang theory) existed before the formation of the chemical elements
Middle English, universal matter, from Old French ilem, from Medieval Latin hȳlem, accusative of hȳlē, matter, from Greek hūlē.(American Heritage® Dictionary of the English Language, Fourth Edition)
Resuscitation of Middle English ylem, one of several variants for the Medieval Latin hyle ("matter"), a transliteration of Aristotle’s concept of “(fundamental) matter”, in Ancient Greek ὕλη (hulē, "wood(s), material(s), matter, subject") or πρώτη ὕλη (“fundamental matter”). (Wiktionary)