English
Noun
en-noun
- context|obsolete|organic chemistry An alkene.
- context|obsolete|organic chemistry An alkanediyl functional group, especially one having the free valencies of adjacent carbon atoms.
Usage notes
This is not obsolete in the functional group usage for chemical patent claims and descriptions; used along with alkenylene and alkynylene.
See also
methylene
ethylene
propylene
ru:alkylene
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