Definition of ylem Ylem
y•lem
We found 2 definitions of ylem from 2 different sources.
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What does ylem mean?
WordNet
NounPlural: ylems |
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| ylem - (cosmology) the original matter that (according to the big bang theory) existed before the formation of the chemical elements | ||
| matter that which has mass and occupies space; "physicists study both the nature of matter and the forces which govern it" | ||
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Wiktionary 
- 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 .
