Pronunciation: (nō-tā'shun),[key] —n. 1. a system of graphic symbols for a specialized use, other than ordinary writing: musical notation. 2. the process or method of noting or setting down by means of a special system of signs or symbols.
3. the act of noting, marking, or setting down in writing.
4. a note, jotting, or record; annotation: notations in the margin.