a. [f. as next + -OUS.] Nat. Hist. Of uniform color.
1840. E. Newman, Brit. Ferns (1844), 234. The stem … is clothed with narrow … brown, concolorous scales.
1843. Humphreys, Brit. Moths, II. 161. The apical half of the wing concolorous with the base.
1881. Syd. Soc. Lex., Concolourous.
