Medical Definition of Fear of the number 13

  • Medical Author:
    William C. Shiel Jr., MD, FACP, FACR

    Dr. Shiel received a Bachelor of Science degree with honors from the University of Notre Dame. There he was involved in research in radiation biology and received the Huisking Scholarship. After graduating from St. Louis University School of Medicine, he completed his Internal Medicine residency and Rheumatology fellowship at the University of California, Irvine. He is board-certified in Internal Medicine and Rheumatology.

Fear of the number 13: A morbid fear of the number 13. Also known as triskaidekaphobia. Written reference to the superstitious fear of the number thirteen dates to the late 1800s. Its origin is conjectural (a matter of guesswork). The term triskaidekaphobia first appeared in the early 1900s. It was derived from treiskaideka, the Greek word for thirteen + phobia, fear of = a fear of thirteen.

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Reviewed on 12/11/2018

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