The term "thermobar" is not a commonly used or recognized term in any scientific or technical field. It's possible that it's a misspelling or a term specific to a niche area.

To help me understand what you're looking for, could you provide more context?

For example:

* Where did you encounter this term? (e.g., a book, website, conversation)

* What was the context surrounding the term?

* What do you think it might refer to?

With more information, I can help you find the right definition or explanation.