"Hullocigen" is not a recognized scientific term or word. It's likely a misspelling or a made-up word.

If you can provide more context or information about where you encountered this term, I might be able to help you figure out what it could mean. For example:

* Did you see it in a book, article, or website?

* What was the topic being discussed?

* Was it used in a specific context?

Please provide more details so I can assist you further.