A constituent of folic acid, containing p-aminobenzoic acid and pteridine linked by a –CH2– group between the amino group of the former and C-6 of the latter.
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pte·ro·ic acid tə-.rō-ik- n a crystalline amino acid C14H12N6O3 formed with glutamic acid by hydrolysis of folic acid
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pte·ro·ic ac·id (tə-roґik) a constituent of folic acid consisting of p-aminobenzoic acid linked to a substituted pteridine by a methylene bridge.Medical dictionary. 2011.