leuko-, leuk-, -leukemia; alternate spellings: leuco-, leuc-, -leucemia
(Greek: leukos, white; the primary meaning now is the color "white"; but it also includes the meanings of "light, clear, bright")
The property of attracting or repelling leukocytes.
Whiteness of the hair.
venereal collar, collar of pearls, collar of Venus, leukoderma colli
Syphilitic leukoderma or a congenital skin condition characterized by spots or bands of unpigmented skin around the neck and shoulders.
It is virtually pathognomonic of late syphilis; that is, decisively characteristic of a disease or indicating a disease with certainty.