n.
Pronunciation: ˌ tris- ˌ k ī - ˌ de-k ə - ' f ō -b ē - ə , ˌ tris-k ə -
Function: noun
Etymology: New Latin, from Greek treiskaideka thirteen (fr. treis three + kai and + deka ten) + New Latin phobia ― more at THREE , TEN
Date: circa 1911
: fear of the number 13