/ Dictionary / Index S sepiolite: Meaning and Definition of Find definitions for: se•pi•o•lite Pronunciation: (sē'pē-u-līt"), [key] — n. Mineral. meerschaum (def. 1). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sepiolite (Thesaurus) sepia sepn. Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language