I. də̇ˌmin(y)əˈwen(ˌ)dō adverb (or adjective)
Etymology: Italian, literally, diminishing, from Latin diminuendum, gerund of diminuere
: with gradually diminishing volume or intensity : decrescendo — used as a direction in music; abbreviation dim. or dimin.
II. noun
( plural diminuendos or diminuendoes )
Etymology: Italian, from diminuendo, adjective
1. : a gradual decrease in volume or intensity especially of sound
2. : a musical passage, phrase, or note played with diminishing volume or force