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nano- pref.
[SI: the next quantifier below micro-; meaning * 10^(-9)] Smaller than micro-, and used in the same rather loose and connotative way. Thus, one has nanotechnology (coined by hacker K. Eric Drexler) by analogy with `microtechnology'; and a few machine architectures have a `nanocode' level below `microcode'. Tom Duff at Bell Labs has also pointed out that "Pi seconds is a nanocentury". See also quantifiers, pico-, nanoacre, nanobot, nanocomputer, nanofortnight.
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