[n_əʊ_t_ˈeɪ_ʃ_ə_n], [nə͡ʊtˈe͡ɪʃən], [nəʊtˈeɪʃən]
Definitions of notation

a technical system of symbols used to represent special things

a comment or instruction ( usually added); " his notes were appended at the end of the article"; " he added a short notation to the address on the envelope"

The act or practice of recording anything by marks, figures, or characters.

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.

Literal or etymological signification.

The act or practice of recording by marks or symbols; a system of signs or symbols used in place of language, for brevity or clearness; especially, the system of numbers, letters, and signs used in arithmetic and algebra, and in writing music.

A noting or marking: the act or practice of recording by marks or symbols: a system of signs or symbols.

Act of noting, system of characters.

The process of noting or designating by figures, etc.

Any system of signs, figures, etc., as arithmetical characters.

The act or practice of recording anything by marks; a system of signs.

The act or practice of recording anything by marks or figures; the expression of any number or quantity by its appropriate figures; the art of representing musical sounds by notes or signs.
Usage examples for notation

When I got to London I gave the notation, as it had been played on the organ, to the friend who has just gone out, and she spoke it to me, giving my words a new quality by the beauty of her voice. – Ideas of Good and Evil by William Butler Yeats

Nevius pulled out the note book and crossed off the notation. – Sunny Slopes by Ethel Hueston

These are the men whom you are to teach foreign languages, mathematics, and the notation of music. – Thoughts on Educational Topics and Institutions by George S. Boutwell

I have no personal acquaintance with the Western meadow lark, but no less than twenty six of his songs have been printed in musical notation, and these are said to be by no means all. – Birds in the Bush by Bradford Torrey

But a notation similar to that of which we have spoken can be discovered, and its exact signification should now be determined. – Artistic Anatomy of Animals by Édouard Cuyer

A horse, or bullock, of eighty dollars' value, would require a notation of six figures, to wit, 115, 200, and the public debt, suppose of eighty millions, would require twelve figures, to wit, 115, 200, 000, 000 units. – Memoir, Correspondence, And Miscellanies, From The Papers Of Thomas Jefferson by Thomas Jefferson

He got the two messages and Suddenly he bent forward and examined a notation in a strange hand: Missent Houston. – The White Desert by Courtney Ryley Cooper

It contains a collection of extracts in prose and verse, suitable for reading aloud, transcribed into a simple phonetic notation. – The Romance of Names by Ernest Weekley

He ought to record the observation immediately, in a precise system of notation; he ought to give a precise indication of his method. – Introduction to the Study of History by Charles V. Langlois Charles Seignobos