(say-sahn) “thirteen”; the 5th Kata learned in Shohei-Ryu; one of the original forms taught by Kanbun Ueichi

The karate kata Seisan (alternate names: Sesan, Seishan, Jusan, Hangetsu) literally means '13', however some people refer to the kata as '13 Hands', '13 Fists' or '13 Steps'.