NONET Meaning of NONET in English [ nəʊ'nɛt , nɒ'nɛt ]■ noun1》 a group of nine. 2》 a musical composition for nine voices or instruments.OriginC19: from Ital. ~to , from nono 'ninth'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004