■ noun 'dɪskɔ:d
1》 lack of agreement or harmony.
2》 Music lack of harmony between notes sounding together.
↘a chord which is regarded as displeasing or requiring resolution by another.
↘any interval except unison, an octave, a perfect fifth or fourth, a major or minor third and sixth, or their octaves.
■ verb dɪs'kɔ:d archaic disagree.
Origin
ME: from OFr. descord (n.), descorder (v.), from L. ~are , from discors '~ant', from dis- (expressing negation) + cor , cord- 'heart'.