Answer:
Very small item
Step-by-step explanation:
Nano- (symbol n) is a unit prefix meaning one billionth". Used primarily with the metric system, this prefix denotes a factor of 10−9 or 0.000000001.
“Nano” is the metric prefix for 1 x 10-9, so a nanometer (nm) is a billionth of a meter. It comes from an ancient Greek word that means “dwarf.” Nanoparticles range from 1 to 100 nm in diameter.
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