ylem ylang-ylang • Y level · · · Info · Definitions · Characters · · ylem · · Text Latin · · Script 4 · · Length 1 · · Syllables Definitions · · · (noun) (cosmology) the original matter that (according to the big bang theory) existed before the formation of the chemical elements. · · Noun Definition 1 Characters · · e latin small letter e U+0065 l latin small letter l U+006C m latin small letter m U+006D y latin small letter y U+0079