When did Muslims become a race?

See the dictionary definition of "race" that I put in my 04 Jul 06 - 11:47 AM post.

"Race" is a tricky word. It's meaning is always subjective, even when it is being used to try to define biological differences between people. There really is no scientific way to define "race".

The dictionary is a pretty good authority on how words are used, and I have no problem with accepting it's definitions for the word race.