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From The Collaborative International Dictionary of English v.0.48:
Notation \No*ta"tion\, n. [L. notatio a marking, observing, etymology, fr. notare to mark, nota a mark: cf. F. notation. See 5th Note.] 1. The act or practice of recording anything by marks, figures, or characters. [1913 Webster] 2. Any particular system of characters, symbols, or abbreviated expressions used in art or science, to express briefly technical facts, quantities, etc. Esp., the system of figures, letters, and signs used in arithmetic and algebra to express number, quantity, or operations. [1913 Webster] 3. Literal or etymological signification. [Obs.] [1913 Webster] "Conscience" is a Latin word, and, according to the very notation of it, imports a double or joint knowledge. --South. [1913 Webster]