[Marsh.]

Originally Posted by Twosugars

don't understand it, but ok.
personally don't have a problem with that as it'd be used in trans-related discussions only, I imagine
and it is nicely symetric reminiscent of chemical isomers

Cisgender has its origin in the Latin-derived prefix cis-, meaning "on this side of", which means the opposite of trans-, meaning "across from" or "on the other side of"
wikipedia def.

Exactly. But if someone is determined to be offended, they'll be offended.