Breadcrumb Home > Dictionary > Index T triskaidekaphobia: Meaning and Definition of Find definitions for: tris•kai•dek•a•pho•bi•a Pronunciation: (tris"kī-dek"u-fō'bē-u, tris"ku-), [key] — n. fear or a phobia concerning the number 13. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: triskaidekaphobia (Thesaurus) trishaw triskelion ✖ Related Content Daily Word Quiz: sandbag Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language