(|)gal, (|)gȯl + noun
Etymology: International Scientific Vocabulary gall- + acet- + phenyl + -one; probably originally formed as German gallazetophenon
: a yellow crystalline compound C 6 H 3 (OH) 3 COCH 3 formerly used as a mordant dye and also locally as an antiseptic; 2,3,4-trihydroxy-acetophenone — called also Alizarine Yellow C