| a water-soluble vitamin that is converted to a coenzyme essential to purine and thymine biosynthesis: deficiency causes a form of anemia. |

folic acid fo·lic acid (fō'lĭk, fŏl'ĭk)
n.
A yellowish-orange compound of the vitamin B complex group, occurring in green plants, fresh fruit, liver, and yeast. Also called folacin, folate, vitamin Bc.