/ 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: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language