TRISKAIDEKAPHOBIA Meaning of TRISKAIDEKAPHOBIA in English [ ˌtrɪskʌɪdɛkə'fəʊbɪə ]■ noun extreme superstition regarding the number thirteen.Originearly 20th cent.: from Gk treiskaideka 'thirteen' + -phobia . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004