Dictionary
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.
part of the folic acid molecule, a white or yellowish, crystalline, slightly water-soluble solid, C
7H
7NO
2, 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.