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Methylene
//ˈmɛθɪliːn// noun
Definitions
Noun
- 1 The divalent group –CH₂– in which the free valencies are part of single bonds. countable, uncountable
- 2 the bivalent radical CH2 derived from methane wordnet
- 3 The same group, present as a repeating unit, in aliphatic compounds with names such as hexamethylenediamine. countable, uncountable
- 4 The unstable carbene :CH₂ countable, uncountable
Etymology
French méthylène, from Ancient Greek μέθυ (méthu, “wine”) + ὕλη (húlē, “wood”). By surface analysis, meth- + -ylene.
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