para-aminosalicylic acid
noun
para-ami·no·sal·i·cyl·ic acid ˌper-ə-ə-ˌmē-ˌnō-ˌsa-lə-ˈsi-lik- 
ˌper-ə-ˌa-mə-(ˌ)nō-,
ˌpa-rə-
: the white crystalline para-substituted isomer of aminosalicylic acid that is made synthetically and is used in the treatment of tuberculosis
Word History
First Known Use
1946, in the meaning defined above
Medical Definition
para-aminosalicylic acid
noun
para-ami·no·sal·i·cyl·ic acid -ˌsal-ə-ˌsil-ik-
: the white crystalline para-substituted isomer of aminosalicylic acid that is made synthetically and is used in the treatment of tuberculosis