homogentisic acid
ho·mo·gen·tis·ic acid
noun \ˌhō-mō-ˌjen-ˈtiz-ik, ˌhäm-ō-\Definition of HOMOGENTISIC ACID
: a crystalline acid C8H8O4 formed as an intermediate in the metabolism of phenylalanine and tyrosine and found especially in the urine of those affected with alkaptonuria
