(archaic) The study of keraunographs (figures or pictures impressed by lightning upon the human body or elsewhere).
keraunoscopy
leukocytopenia
leukocytopenia
noun
(medicine) Leukopenia.
pamunkey
phenylketonuria
phenylketonuria
noun
(medicine) A metabolic disorder in which individuals lack the liver enzyme phenylalanine hydroxylase (PAH) which is needed to metabolize the amino acid phenylalanine.