Originally Posted by Rottersod
Saying "min raise" is as clear as a person can get short of announcing an exact amount. it's actually a very specific announcement. It's his fault if he didn't know what a min raise meant.
Who exactly defines what "min raise" means? As far as I know, there is no official poker rule book that defines the term.
"Min raise" was not a commonly used in live poker until a few years ago. And clearly, there is enough disagreement about its meaning that one player at the OP's table thought it meant something different that what the OP thinks it means.
I would certainly agree that the OP's definition is both more popular and more sensible than the bettor's. But for something to be a verbally binding bet, its meaning has meet a higher standard than merely being more popular and sensible. I think it has to be almost universally acknowledged as unambiguous. "Min raise" has become a much more popular term recently, and I think it is close to meeting that standard. But it seems that the OP's example demonstrates that it is not quite there yet.