Noun
(phonetics, obsolete) A weaker sound that immediately follows a more salient one, such as the second, less prominent vowel sound in a falling diphthong.
A sound that persists or remains audible after its source has ceased to produce it; the perception of such a sound.
Synonyms: echo, resonance, reverberation
Antonym: foresound
Hypernym: after-impression
(acoustics) The second, slower phase of decay in the sound made by a piano string when it is struck.
Coordinate term: prompt sound