Dictionary.net

comb. form of Greek xanthos yellow: xanthate, a salt of xantnic acid; xanthein (e), soluble part of yellow colouring-matter in flowers; xanthic, yellowish (x. acid, ethyl-disulpho-carbonic acid with yellow salts; x. flowers, typically yellow& never passing into blue but only into red or white, opp. cyanic flowers with blue as typical& red or white as alternative colours); xanthin, insoluble part of yellow colouring-matter in flowers, also colouring-matter of madder, also a substance related to uric acid occurring in blood, urine, liver, &c.; xanthochroi n. pl. (ethnol.), blonds or fair whites (cf. MELANOCHROI), so -chroic, -chroous, aa.; xanthomelanous (ethnol.), with black hair& yellow or brown or olive skin; xanthophyll, yellow colouring-matter of autumn leaves (cf. chlorophyll); xanthous (ethnol.), yellow or Mongoloid.