(1):

(a.) Of or pertaining to xanthic acid, or its compounds; xanthogenic.

(2):

(a.) Tending toward a yellow color, or to one of those colors, green being excepted, in which yellow is a constituent, as scarlet, orange, etc.

(3):

(a.) Of or pertaining to xanthin.

(4):

(a.) Possessing, imparting, or producing a yellow color; as, xanthic acid.