[ 'ki:təʊn ]
■ noun Chemistry an organic compound containing a carbonyl group ═C═O bonded to two alkyl groups, e.g. acetone.
Derivatives
ketonic kɪ'tɒnɪk adjective
Origin
C19: from Ger. Keton , alt. of Aketon 'acetone'.
[ 'ki:təʊn ]
■ noun Chemistry an organic compound containing a carbonyl group ═C═O bonded to two alkyl groups, e.g. acetone.
Derivatives
ketonic kɪ'tɒnɪk adjective
Origin
C19: from Ger. Keton , alt. of Aketon 'acetone'.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004