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ONAD→ylem

ylem

Flag: gbEnglishOxford New American Dictionary
ylem /ˈīləm, ˈaɪləm /
▸ noun Astronomy (in the Big Bang theory) the primordial matter of the universe, originally conceived as composed of neutrons at high temperature and density.
– ORIGIN 1940s : from late Latin hylem (accusative) ‘matter’.