It's possible it could be:
* A misspelling: Check if you meant a similar word like "slant" or "silent."
* A proper noun: It might be a name or a place name. In that case, the pronunciation would depend on its origin.
* A technical term: It could be a term specific to a certain field.
To help me understand what you mean, please provide more context:
* Where did you encounter this word?
* What was the context?
With more information, I can help you figure out the correct pronunciation.