[noun] [C] - a set of letters arranged in a fixed order which is used for writing a languageThe Urdu language has thirty-seven letters in its alphabet.Russian and Bulgarian are written in the Cyrillic alphabet.The pronunciations in this dictionary are given in the International Phonetic Alphabet.
ALPHABET
Meaning of ALPHABET in English
Cambridge English vocab. Кембриджский английский словарь. 2012