Definitions for ylem

This page provides all possible meanings and translations of the word ylem

Princeton's WordNetRate this definition:(0.00 / 0 votes)

  1. ylem(noun)

    (cosmology) the original matter that (according to the big bang theory) existed before the formation of the chemical elements

WiktionaryRate this definition:(0.00 / 0 votes)

  1. ylem(Noun)

    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.

  2. Origin: Resuscitation of , one of several variants for the hyle, a transliteration of Aristotle’s concept of “(fundamental) matter”, in ὕλη or πρώτη ὕλη (“fundamental matter”).

FreebaseRate this definition:(0.00 / 0 votes)

  1. 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 Gamow was the primordial plasma, formed in baryogenesis, which underwent Big Bang nucleosynthesis and was opaque to radiation. Recombination of the charged plasma into neutral atoms made the Universe transparent at the age of 380,000 years, and the radiation released is still observable as cosmic microwave background radiation.

Anagrams of ylem »

  1. elmy, Lyme, yelm

  2. Elmy

  3. Lyme

  4. Yelm


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