Nucleus-counter
noun
1.
.
noun
1.
any instrument used to measure the size and number of dust particles per unit volume in the atmosphere.
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[noo-klahyd, nyoo-] /ˈnu klaɪd, ˈnyu-/ noun, Physics. 1. an atomic species in which the atoms all have the same atomic number and mass number. 2. an individual atom in such a species. /ˈnjuːklaɪd/ noun 1. a species of atom characterized by its atomic number and its mass number See also isotope n. 1947, from nucleus […]
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