
1) Big Bang matter 2) Hypothetical form of matter 3) Hypothetical substance 4) Mass of matter 5) Matter 6) Matter in the Big Bang theory 7) Original matter 8) Posited Big Bang substance 9) Primordial matter, to some 10) Primordial substance 11) Protomatter of the universe 12) Source of all matter 13) Substance
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https://www.crosswordclues.com/clue/ylem

Ylem is a term that was used by George Gamow, Ralph Alpher, and their associates in the late 1940s for a hypothetical original substance or condensed state of matter, which became subatomic particles and elements as we understand them today. The term ylem was actually coined by Ralph Alpher. In modern understanding, the `ylem` described as by Ga.....
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http://en.wikipedia.org/wiki/Ylem
[Stockhausen] Ylem (pron /ˈiːlɛm/ or /ˈaɪləm/) is a composition by Karlheinz Stockhausen for a variable ensemble of 19 or more players, and is given the work number 37 in his catalogue of compositions. ==History== Ylem is `phoenix music`, in that it represents the continual rebirth of the universe, according to the theory of the oscil...
Found on
http://en.wikipedia.org/wiki/Ylem_(Stockhausen)

in alchemy, substance from which the elements developed
Found on
http://phrontistery.info/y.html

[
n] - (cosmology) the original matter that (according to the big bang theory) existed before the formation of the chemical elements
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http://www.webdictionary.co.uk/definition.php?query=ylem
noun (cosmology) the original matter that (according to the big bang theory) existed before the formation of the chemical elements
Found on
https://www.encyclo.co.uk/local/20974

the initial substance of the universe from which all matter is said to be derived.
Found on
https://www.infoplease.com/dictionary/ylem
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