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Definitions

American Heritage® Dictionary of the English Language, Fourth Edition

  1. n. Any of several carcinogenic or teratogenic heterocyclic hydrocarbons that occur as impurities in petroleum-derived herbicides.

Wiktionary

  1. n. any of a broad range of toxic or carcinogenic halogenated polycyclic compounds that occur as byproducts of herbicides
  2. n. the parent compound, dibenzo-p-dioxin, in which two benzene rings are connected vio two oxygen atoms; oxanthrene
  3. n. the unsaturated six-membered heterocycle having four carbon atoms, two oxygen atoms and two double bonds

WordNet 3.0

  1. n. any of several toxic or carcinogenic hydrocarbons that occur as impurities in herbicides

Etymologies

  1. di-1 + ox(o)- + -in.

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‘dioxin’ has been looked up 812 times, added to 6 lists, and has a Scrabble score of 14.