Having a size measured in nanometers; nanoscale(adjective)
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Use "nanosize" in a sentence
""There are things we've been using for a long time which contain nanosize components, like the lasers in DVD and CD players," says Milo Shaffer, head of the London Centre for Nanotechnology."
"So far Pumpkin has sold around 280 nanosatellite kits, a nanosize business compared with the $13.5 billion market for large satellites built by giants like Lockheed Martin and Boeing."
"“I would say this is a breakthrough in the way nanosize light sources are made,” says Stefan Bernhard, a chemistry professor at Princeton University."