- a white, crystalline, water-soluble vitamin, C6H8O6, occurring naturally in citrus fruits, green vegetables, etc., and often produced synthetically, essential for normal metabolism: used in the prevention and treatment of scurvy, and in wound-healing and tissue repair.
- a white crystalline vitamin present in plants, esp citrus fruits, tomatoes, and green vegetables. A deficiency in the diet of man leads to scurvy. Formula: C 6 H 8 O 6
