a. Of, pertaining to, or derived from, chromium, when this element has a valence lower than that in chromic compounds. [ 1913 Webster ]
Chromous acid,
a. [ Hetero- + Gr. &unr_; color. ] (Bot.) Having the central florets of a flower head of a different color from those of the circumference.
a. [ Homo- + Gr. &unr_; color. ] (Bot.) Having all the florets in the same flower head of the same color. [ 1913 Webster ]
a. Of or pertaining to polychromy; many-colored; polychromatic. [ 1913 Webster ]