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aminobenzoic acid a·mi·no·ben·zo·ic acid (ə-mē'nō-běn-zō'ĭk, ām'ə-nō-)
Any of three benzoic acid derivatives, especially the yellowish para form, which is part of the vitamin B complex.
a vitamin-like substance and a growth factor required by several types of microorganisms. In bacteria, PABA is used in the synthesis of the vitamin folic acid. The drug sulfanilamide is effective in treating some bacterial diseases because it prevents the bacterial utilization of PABA in the synthesis of folic acid.