ylem

noun \ˈīləm\

Definition of ylem

plural

-s

  1. :  the primordial first substance from which according to some theories the elements are supposed to be formed; specifically :  a primordial gas consisting of neutrons

There's more!

Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!
Already a subscriber? Log in.

Origin and Etymology of ylem

Middle English, from Middle French ilem, probably from Medieval Latin hylem, accusative of hyle matter, from Latin, from Greek hylē


Seen and Heard

What made you want to look up ylem? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!