gradation

gra•da•tion n. [countable]

a process or change taking place through a series of stages or degrees;
a stage or degree in such a series:gradations of colors on the computer screen.

See -grad-.

gra•da•tion n.

any process or change taking place through a series of stages, by degrees, or in a gradual manner.
a stage, degree, or grade in such a series.
the passing of one tint or shade of color to another, or one surface to another, by very small degrees, as in painting or sculpture.
the act of grading.
ablaut.
Geologythe leveling of a land surface, resulting from the concerted action of erosion and deposition.

gra•da′tion•al, adj.
gra•da′tion•al•ly, adv.

Collins Concise English Dictionary © HarperCollins Publishers::

gradation /ɡrəˈdeɪʃən/ n

a series of systematic stages; gradual progression
(often plural) a stage or degree in such a series or progression
the act or process of arranging or forming in stages, grades, etc, or of progressing evenly
(in painting, drawing, or sculpture) transition from one colour, tone, or surface to another through a series of very slight changes
any change in the quality or length of a vowel within a word indicating certain distinctions, such as inflectional or tense differentiations
See ablaut

graˈdational adj

'gradation' also found in these entries (note: many are not synonyms or translations):

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