only 1 use
(click/touch triangles for details)
- And as we are all apt to believe what the world believes about us, it was his habit to think of failure and ruin with the same sort of remote pity with which a spare, long-necked man hears that his plethoric short-necked neighbor is stricken with apoplexy.1.8 -- Book 1 Chapter 8 -- Mr. Tulliver Shows His Weaker Side (18% in)
There are no more uses of "plethora" in The Mill on the Floss.
Typical Usage (best examples)