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Definition of triskaidekaphobia


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Houghton Mifflin

tris·kai·dek·a·pho·bi·a  audio  (trsk-dk-fb-, trsk-) KEY 

NOUN:
An abnormal fear of the number 13.

ETYMOLOGY:
Greek treiskaideka, thirteen ( treis, three; see trei- in Indo-European roots + kai, and + deka, ten; see deca-) + phobia


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