[no.ta.tion] n [L notation-, notatio, fr. notare to note] (1584) 1: annotation, note
2. a: the act, process, method, or an instance of representing by a system or set of marks, signs, figures, or characters b: a system of characters, symbols, or abbreviated expressions used in an art or science or in mathematics or logic to express technical facts or quantities -- no.ta.tion.al adj