Home US English ylem

Definition of ylem in English:

ylem

noun

Astronomy

  • (in the Big Bang theory) the primordial matter of the universe, originally conceived as composed of neutrons at high temperature and density.

    • ‘We had to use primordial ylem.’

Pronunciation

ylem

/ˈīləm/ /ˈaɪləm/

Origin

1940s from late Latin hylem (accusative) ‘matter’.