təˈ]rōik-, (ˈ)te|] noun
Etymology: pteroic from pter in + -oic
: a crystalline amino acid H 2 NC 6 HN 4 (OH)CH 2 NHC 6 H 4 COOH derived from para -aminobenzoic acid and pteridine and formed along with glutamic acid by hydrolysis of folic acid or other pteroylglutamic acids