para-ami·no·ben·zo·ic acid 'par-ə-ə-.mē-nō-.ben-.zō-ik-, 'par-ə-.am-ə-(.)nō- n a colorless para-substituted aminobenzoic acid that is a growth factor of the vitamin B complex and is used as a sunscreen called also PABA
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para-am·i·no·ben·zo·ic ac·id (par″ə-ə-me″no-bən-zoґik) p-aminobenzoic acid.Medical dictionary. 2011.