ˈfenəˌzēn, -_zə̇n noun
Etymology: International Scientific Vocabulary phen- + azine
: a yellowish crystalline tricyclic nitrogen base C 6 H 4 N 2 C 6 H 4 that is the parent compound of many azine dyes (as the safranines) and a few antibiotics (as pyocyanin); 9,10-di-aza-anthracene