It’s a made up derivation of an old online username that is pronounced like a noun, but is also after a tertiary character on a relatively niche comedy. As complicated as that sounds, it’s a straightforward name. Most people don’t need all that info. They just need to know I’m the girl named after a vegetable. It’s a very cute name. And the shortened form, which actually came first, seems to be a real name in some non-English-speaking cultures. But really, again, most people just know I’m the vegetable girl.

EDIT: I also occasionally go by Eris for spiritual or ceremonial purposes, but idk if that counts as taking it as a name? It’s complicated, tied up in the concept of perpetual invocation, which is itself complicated. Probably not worth the effort to logic out.