zigamorph

/zig'*-morf/ n. 1. Hex FF (11111111) when used as a delimiter or fence character. Usage: primarily at IBM shops. 2. [proposed] n. The Unicode non-character +UFFFF (1111111111111111), a character code which is not assigned to any character, and so is usable as end-of-string. (Unicode (a subset of ISO 10646) is a 16-bit character code intended to cover all of the world's writing systems, including Roman, Greek, Cyrillic, Chinese, hiragana, katakana, Devanagari, Easter Island `rongo-rongo', and even Elvish.)