Meaning of para-aminobenzoic acid

par'a-a•mi•no•ben•zo'ic ac'id

Pronunciation: (par'u-u-mē"nō-ben-zō'ik, -am"u-nō-), [key]
— Chem., Biochem. Chem.,Biochem.
  1. part of the folic acid molecule, a white or yellowish, crystalline, slightly water-soluble solid, CHNO, the para isomer of aminobenzoic acid: used chiefly in the manufacture of dyes and pharmaceuticals and in sunscreens to protect against ultraviolet light. Abbr.: PABA
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.