1) Dreadofthirteen 
Triskaidekaphobia (from Greek tris meaning `3`, kai meaning `and`, deka meaning `10` and phobos meaning `fear` or `morbid fear`) is fear of the number {num|13} and avoidance to use it; it is a superstition and related to a specific fear of Friday the 13th, called paraskevidekatriaphobia (from Παρασκευή Paraskevi, Greek for Frida...
fear of the number thirteen
<psychology> Superstitious dread of the number thirteen. ... Origin: G. Triskaideka, thirteen, + phobos, fear ... (05 Mar 2000) ... 
Type: Term Pronunciation: tris′kī-dek′ă-fō′bē-ă Definitions: 1. Superstitious dread of the number 13.
Triskaidekaphobia: Fear of the number 13. Written reference to this fear dates to the late 1800s. The term triskaidekaphobia appeared in the early 1900s. It is not easy to pronounce unless one speaks Greek. From treiskaideka, the Greek word for thirteen + phobia, fear of = a fear of thirteen.
Triskaidekaphobia is the fear of the number thirteen.
[n] - a morbid fear of the number 13
noun a morbid fear of the number 13