a. [f. Gr. λευκ-ός white + -OUS.] Having a white skin; light-complexioned, blonde. Said esp. of albinos. Also ellipt.
1842. Prichard, Nat. Hist. Man, 78. To these two varieties we must add a third, the leucous or the albino.
1849–52. Todd, Cycl. Anat., IV. 936/2. The leucous races of man … afford the most numerous examples of the sanguine temperament.
1859. R. F. Burton, Centr. Afr., in Jrnl. Geogr. Soc., XXIX. 85. They [albinos] much resemble Europeans of the leucous complexion.
