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doc Definition of methylene
    English to English
    noun
  • the bivalent radical CH2 derived from methane
  • source: WordNet 3.0
  • A hydrocarbon radical, CH2, not known in the free state, but regarded as an essential residue and component of certain derivatives of methane; as, methylene bromide, CH2Br2; -- formerly called also methene.
  • source: Webster 1913
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