Treated or chemically modified by having halogen atoms added to the molecule.
From 'halogenate' + '-ed' (past participle). A common term in organic and pharmaceutical chemistry from the 20th century onward.
Halogenated compounds are everywhere in modern medicine—from antibiotics to steroids to anesthetics—because halogens make organic molecules more stable and give them different properties, but some halogenated chemicals (like old CFCs) also taught us environmental lessons about unintended consequences.
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