Symbian - definition
Symbian is a name of an mobile operating system. Sysmbian was first designed as a propritory OS for PDA by Symbian Ltd. Symbian was release exclusively on ARM based processors. Symbian was used by many popular mobile manufacturer such as Nokia, Sony Erricson, Samsung and Motorola. After Java OS, it was one of the widely used operating system and also much more advanced at the same time. i.e.: Nokia N95 has Symbian OS s60 v5.