diatonic

形容词 diatonic:

1. based on the standard major or minor scales consisting of 5 tones and 2 semitones without modulation by accidentals
2. based on or using the five tones and two semitones of the major or minor scales of Western music

di.a.ton.ic

adj.Music （形容词）【音乐】
Of or using only the eight tones of a standard major or minor scale without chromatic deviations.
全音阶的：与使用的八个音构成一个无变化音八度的标准大调或小调音阶有关的

来源：
Late Latin diatonicus
后期拉丁语 diatonicus
from Greek diatonikos
源自 希腊语 diatonikos
dia- [dia-]
dia- [前缀，表.完全的，有始有终的.]
tonos [tone] * see tone
tonos [音调] *参见 tone

【引伸】
di.aton.ically
adv.（副词）
di.aton.icism