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 (trĭs′kī-dĕk′ə-fō′bē-ə, trĭs′kĭ-)
An abnormal fear of the number 13.

[Greek treiskaideka, thirteen (treis, three; see trei- in Indo-European roots + kai, and + deka, ten; see deca-) + -phobia.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Psychology) an abnormal fear of the number thirteen
[C20: from Greek triskaideka thirteen + -phobia]
ˌtriskaiˌdekaˈphobic adj, n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˌtrɪs kaɪˌdɛk əˈfoʊ bi ə, ˌtrɪs kə-)

fear or a phobia concerning the number 13.
[1910–15; < Greek triskaídeka thirteen + -phobia]
tris`kai•dek`a•pho′bic, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.triskaidekaphobia - a morbid fear of the number 13triskaidekaphobia - a morbid fear of the number 13  
simple phobia - any phobia (other than agoraphobia) associated with relatively simple well-defined stimuli
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The fear of the number 13 is formally known as triskadekaphobia.
Turner was successful on the James Given-trained Green Lagonda, who came with a run up inside rail to head Triskadekaphobia and hold the late rally of Minnow.