gradation
gra.da.tion \gra--'da--sh*n, gr*-\ \-shn*l, -sh*n-*l\ \-e-\ n 1a: a series forming successive stages 1b: a step or place in an ordered scale 2: an advance by regular degrees 3: a color scale - gra.da.tion.al aj
Webster's English Dictionarygra.da.tion \gra--'da--sh*n, gr*-\ \-shn*l, -sh*n-*l\ \-e-\ n 1a: a series forming successive stages 1b: a step or place in an ordered scale 2: an advance by regular degrees 3: a color scale - gra.da.tion.al aj