y·lem (  l m)n. A form of matter hypothesized by proponents of the big bang theory to have existed before the formation of the chemical elements. [Middle English, universal matter, from Old French ilem, from Medieval Latin h  lem, accusative of hl , matter, from Greek h l.] |
ylem [ˈaɪləm]
n
(Astronomy) 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 hȳlē stuff, matter, from Greek hulē wood, matter]
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | 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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