para-aminobenzoic acid

[par-uh-uh-mee-noh-ben-zoh-ik, -am-uh-noh-]

noun Chemistry, Biochemistry.

part of the folic acid molecule, a white or yellowish, crystalline, slightly water-soluble solid, C7H7NO2, the para isomer of aminobenzoic acid: used chiefly in the manufacture of dyes and pharmaceuticals and in sunscreens to protect against ultraviolet light. Abbreviation: PABA

Origin of para-aminobenzoic acid

First recorded in 1905–10; para-1 + amino- + benzoic acid Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for para-aminobenzoic acid

para-aminobenzoic acid


biochem an acid present in yeast and liver: used in the manufacture of dyes and pharmaceuticals. Formula: C 6 H 4 (NH 2)COOH
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

para-aminobenzoic acid in Medicine

para-aminobenzoic acid

[păr′ə-ə-mē′nō-bĕn-zōĭk, -ăm′ə-]


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

para-aminobenzoic acid in Science

para-aminobenzoic acid

[părə-ə-mē′nō-bĕn-zō′ĭk, -ăm′ə-]

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.