What is the definition of root word ratio?

The term "root word ratio" is not a commonly used or defined term in linguistics or any other field. It's likely a made-up phrase or a specific term used in a particular context that you haven't provided.

To better understand what you mean by "root word ratio," please provide more information, such as:

* Where did you encounter this term? (e.g., in a book, article, lecture, etc.)

* What was the context of its use? (e.g., what was being discussed when this term was mentioned?)

* What do you think it might mean? (e.g., is it related to word formation, morphology, or something else?)

With more context, I can help you understand the meaning of "root word ratio."