Nano-
Nano- is a unit prefix meaning "one billionth". Used primarily with the metric system, this prefix denotes a factor of 10−9 or. It is frequently encountered in science and electronics for prefixing units of time and length.
Examples:
The prefix derives from the Greek officially endorsed the usage of nano as a standard prefix in 1960.
When used as a prefix for something other than a unit of measure , nano refers to nanotechnology, or means "on a scale of nanometres". See nanoscopic scale.
