Polychlorinated is a related term of polyhalogenated.
As adjectives the difference between polychlorinated and polyhalogenated
is that polychlorinated
is (chemistry) having many hydrogen atoms replaced by chlorine while polyhalogenated
is with multiple halogen atoms.
(chemistry) Having many hydrogen atoms replaced by chlorine.
*polychlorinated biphenyl (PCB)
*polychlorinated naphthalene (PCN)
with multiple halogen atoms.