Methylene group

In organic chemistry, a methylene group is any part of a molecule that consists of two hydrogen atoms bound to a carbon atom, which is connected to the remainder of the molecule by a double bond. The group may be written {Chem|=CH|2}, where the `=` denotes the double bond. This structural element is also called methylidene. Many organic compound.....
Found on http://en.wikipedia.org/wiki/Methylene_group

methylene group

[n] - the bivalent radical CH2 derived from methane
Found on http://www.webdictionary.co.uk/definition.php?query=methylene%20group

methylene group

methylene radical noun the bivalent radical CH2 derived from methane
Found on http://wordnetweb.princeton.edu/perl/webwn?s=methylene%20group
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