-ein Hear it!

-ein definition

-ein (ēn, ē in)

  1. used to differentiate a compound from another having a similar spelling but ending in -in or -ine
  2. used to indicate a compound containing an internal anhydride
Also -eine

Etymology: altered < -in & -ine

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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