DIMINUTION Meaning of DIMINUTION in English [ ˌdɪmɪ'nju:ʃ(ə)n ]■ noun1》 a reduction in size, extent, or importance. 2》 Music the shortening of the time values of notes in a melodic participle Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004