METHYLENE
\mˈɛθɪlˌiːn], \mˈɛθɪlˌiːn], \m_ˈɛ_θ_ɪ_l_ˌiː_n]\
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By DataStellar Co., Ltd
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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.
By Oddity Software