Meaning of NOTATION in English
noun literal or etymological signification.
2. notation ·noun the act or practice of recording anything by marks, figures, or characters.
3. notation ·noun 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.
Webster English vocab. Английский словарь Webster. 2012