gradation has definitions from the fields of linguistics,phonetics
1
[ noun ] (linguistics,phonetics) a vowel whose quality or length is changed to indicate linguistic distinctions (such as sing sang sung song)

Synonyms

ablaut

Related terms

vowel

2
[ noun ] relative position in a graded series

Synonyms

step

Examples

: "always a step behind" "subtle gradations in color" "keep in step with the fashions"

Related terms

rank cut gradate

3
[ noun ] (linguistics,phonetics) a degree of ablaut

Synonyms

grade

Related terms

ablaut

4
[ noun ] the act of arranging in grades

Synonyms

graduation

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