Definition of folic acid
: a crystalline vitamin C19H19N7O6 of the B complex that is required for normal production of red blood cells, is used especially in the treatment of nutritional anemias, and occurs chiefly in green leafy vegetables, liver, kidneys, dried beans, and mushrooms
— called also pteroylglutamic acid
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Merriam-Webster unabridged
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Time Traveler for folic acid
The first known use of folic acid was in 1941
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