[Paleo Conservative]

cisgender means you identify with the biological gender

ie you’re normal

but its used often as a derogatory term when they say it to you,

its like a non-white saying well, see, you’re WHITE

It's a snobbish term created by people who didn't go further than organic chemistry, but want to dazzle people by using terms lifted from a hard physical science.

[Secret Agent Man]

yes your explanation is also correct