Nano-

{{Short description|SI prefix denoting 10 to the -9th power}}

{{Other uses|Nano (disambiguation){{!}}Nano}}

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{{Wiktionary|nano-}}

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 {{Gaps|0.000|000|001}}. It is frequently encountered in science and electronics for prefixing units of time and length.

The prefix derives from the Greek {{lang|grc|νᾶνος}} (Latin {{lang|la|nanus}}), meaning "dwarf". The General Conference on Weights and Measures (CGPM) 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 (as for example in words like "nanoscience"), nano refers to nanotechnology, or means "on a scale of nanometres" (nanoscale).

{{SI prefixes (infobox)}}