para-aminobenzoic acid
noun
para-ami·no·ben·zo·ic acid ˌper-ə-ə-ˌmē-ˌnō-ˌben-ˈzō-ik- 
ˌper-ə-ˌa-mə-(ˌ)nō-,
ˌpa-rə-
: 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
Example Sentences
Recent Examples on the Web Look for a brand that has no fragrance and doesn’t contain zinc oxide or para-aminobenzoic acid; dogs often lick sunscreen off their skin, and both ingredients are toxic. 
Washington Post, 3 June 2021
Washington Post, 3 June 2021 Word History
Etymology
International Scientific Vocabulary
First Known Use
1904, in the meaning defined above
Medical Definition
para-aminobenzoic acid
noun
para-ami·no·ben·zo·ic acid ˈpar-ə-ə-ˌmē-nō-ˌben-ˌzō-ik-, ˈpar-ə-ˌam-ə-(ˌ)nō-
: 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