methylene

As nouns the difference between polyethylene and methylene

is that polyethylene is while methylene is methylene.

As nouns the difference between methylene and ethene

is that methylene is methylene while ethene is ethene.

As a noun methylene is

methylene.

In organic chemistry terms the difference between methine and methylene

is that methine is the tervalent functional group, -CH=, having one single bond and one double bond while methylene is the unstable carbene CH₂.

As nouns the difference between methylene and trackback

is that methylene is the divalent radical CH₂< in which the free valencies are part of single bonds while trackback is a method to keep track of links to content, especially blog entries.

As a proper noun TrackBack is

a protocol for a system that allows a blogger to see who has seen the original post and has written another entry concerning it.

is likely misspelled.

has no English definition.

As a noun methylene

is the divalent radical CH₂< in which the free valencies are part of single bonds.

As nouns the difference between methyl and methylene

is that methyl is the univalent hydrocarbon radical, CH₃, formally derived from methane by the loss of a hydrogen atom; a compound or part of a compound formed by the attachment of such a radical while methylene is the divalent radical CH₂< in which the free valencies are part of single bonds.

As nouns the difference between methylene and methane

is that methylene is the divalent radical CH₂< in which the free valencies are part of single bonds while methane is the simplest aliphatic hydrocarbon, CH₄, being a constituent of natural gas.

As nouns the difference between iodine and methylene

is that iodine is a chemical element (symbol : i) with an atomic number of 53; one of the halogens while methylene is methylene.

As a verb iodine

is to treat with iodine.

As nouns the difference between methylene and methylone

is that methylene is methylene while methylone is (informal) mephedrone.