ylem's

ylem

[ahy-luhm]
noun
the initial substance of the universe from which all matter is said to be derived.

Origin:
1948; adoption, in modern astrophysics, of Middle English ylem (Gower) < Medieval Latin (h)ȳlem, accusative of hȳlē < Greek hȳ́lē matter, wood

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ylem (ˈaɪləm)
 
n
the original matter from which the basic elements are said to have been formed following the explosion postulated in the big bang theory of cosmology
 
[Middle English, from Old French ilem, from Latin hӯlē stuff, matter, from Greek hulē wood, matter]

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