/ Dictionary / Index E Eleusinian: Meaning and Definition of Find definitions for: El•eu•sin•i•an Pronunciation: (el"yoo-sin'ē-un), [key] — adj. of or pertaining to Eleusis or to the Eleusinian mysteries. —n. a native or inhabitant of Eleusis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Elets Eleusinian mysteries Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language