Gradation
WordNet
noun
(1) The act of arranging in grades
(2) A degree of ablaut
(3) Relative position in a graded series
"Always a step behind"
"Subtle gradations in color"
"Keep in step with the fashions"
WiktionaryText
Noun
- A sequence of gradual, successive stages; a systematic progression.
- A passing by small degrees from one tone or shade, as of color, to another. See Synonyms at nuance.
- The act of gradating or arranging in grades.
- A gradual change within one parameter, or an overlapping of two blocks of sound.
- Apophony.