Wiktionary
dibenzodioxin
n. (context organic compound English) An aromatic heterocycle having two benzene rings fused to a dioxin one; any of many derivatives of this compound
Usage examples of "dibenzodioxin".
So polychlorinated biphenyl and polychlorinated dibenzodioxin are structurally similar compounds.
That biphenyl or dibenzodioxin structure - the twelve-pack - dissolves easily in fat.