nanoporeEnglishOxford New American Dictionarynanopore /ˈnanōˌpôr, ˈnænoʊˌpɔr / ▸ noun a pore or cavity with dimensions of only a few nanometers: the silica layers had created a vast warren of nanopores, forming a sponge that soaked up any surface water instantly. – DERIVATIVES nanoporous /ˈnanōˌpôrəs/ adjective