If you could provide more context, I might be able to help figure out what you're looking for. For example, did you see this word in a specific text or conversation?
Here are some possible words you might have meant:
* Dissate (misspelled): This could be a misspelling of "dissipate," meaning to disperse or disappear gradually.
* Dissate (misspelled): This could be a misspelling of "dissect," meaning to cut something apart for examination.
* Dissate (made-up word): It's possible the word was created intentionally, in which case more context is needed to understand its meaning.
Please let me know if you can provide any further information!