Methylene vs Trackback - What's the difference?
methylene | trackback |
(organic chemistry) The divalent radical CH2< in which the free valencies are part of single bonds.
(organic chemistry) The same group, present as a repeating unit, in aliphatic compounds with names such as hexamethylenediamine.
(organic chemistry) The unstable carbene CH2:
(software, Internet, blogging) A protocol for a system that allows a blogger to see who has seen the original post and has written another entry concerning it.