ylem

noun
\ ˈīləm \
plural -s

Definition of ylem

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

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!

History and Etymology for ylem

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

Learn More About ylem

Dictionary Entries Near ylem

yld

ylem

-ylene

See More Nearby Entries 

Statistics for ylem

Cite this Entry

“Ylem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ylem. Accessed 10 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

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