NONENTITY Meaning of NONENTITY in English [ nɒ'nɛntɪti ]■ noun ( plural nonentities ) 1》 an unimportant person or thing. 2》 non-existence.OriginC16: from med. L. nonentitas 'non-existence'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004