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It's the funny Greek u meaning micro.Muhammad = uhammad
hammad is unit of how many hams are mad..
1 uhammad = 1E-6 hammads The hammad is a preferred unit.
For example 106 hammads were studied.
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'Some pigs in the United States may be infected with a porcine form of mad cow disease, according to an alarming study by U.S. Department of Agriculture (USDA) scientists that has recently come to light.'If one affected hammad were cut into 1 million pieces then each piece is a Muhammad or uhammad or microhammad.
I'm guessing a Muhammad is less than the size of slice of bacon.