It's possible that:
* It's a misspelling: Could you double-check the spelling?
* It's a specific term: Is it a technical term, a name, or from a specific field? Providing more context would help.
* It's a made-up word: If it's a fictional word, there's no "correct" pronunciation. You can pronounce it however you like!
Please provide more information so I can help you with the pronunciation.