n. a vitamin that maintains the resistance of cell and capillary walls to permeation; -- called also
n. [ See Citrine. ] The process by which anything becomes of the color of a lemon; esp., in alchemy, the state of perfection in the philosopher's stone indicated by its assuming a deep yellow color. Thynne. [ 1913 Webster ]
a. [ F. citrin. See Citron. ] Like a citron or lemon; of a lemon color; greenish yellow. [ 1913 Webster ]
Citrine ointment (Med.),
n. A yellow, pellucid variety of quartz. [ 1913 Webster ]