It's important to note that "medius" isn't the direct source of the word "mean". The word "mean" is a result of a more complex journey through Old English and Middle English. But "medius" is the foundation upon which our understanding of "mean" is built.
Here's how it works:
* "Medius" (Latin): Middle
* "mēd" (Old English): Middle point, middle value
* "mene" (Middle English): Middle point, middle value
* "mean" (Modern English): The average, the middle point
So, even though the word "mean" doesn't directly come from "medius", its meaning is still rooted in the concept of "middle".