Here are some possibilities:
* If it's a misspelling, it might be a word like "amidian", which is a synonym for "central" or "midst".
* If it's from another language, please provide more context so I can help you translate it.
For example, tell me:
* Where did you encounter this word? (e.g., a book, a website, a conversation)
* What was the surrounding text?
* What is the overall subject matter?
This will help me understand what "amahdan" might mean in English.