[Greek nānos, nannos, little old man, dwarf, from nannās, uncle.]
[Etymology: Gk: ‘dwarf’] Symbol n-. (Metric) The 10-9 multiplier, e.g. 1 nanogram = 1 ng = 10-9 g.
[CMU: from nanosecond] A brief period of time. “Be with you in a nano” means you really will be free shortly, i.e., implies what mainstream people mean by “in a jiffy” (whereas the hackish use of ‘jiffy’ is quite different — see jiffy).

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