naphthacene
/ˈnafθəsiːn/ /ˈnapθəsiːn/Chemistry
noun
A hydrocarbon, C18H12, which is an orange-red solid with explosive properties and a molecule consisting of four fused benzene rings.
Origin
Late 19th century; earliest use found in Journal of the Chemical Society. Blend of naphtha and anthracene, after German Naphtacen.