the number of neutrons in the nucleus of an atom, equal to the mass number minus the atomic number of the atom. Symbol: N.
the number of neutrons in the nucleus of an atom N
- Neutron poison
noun 1. (physics) a nonfissionable material used to absorb neutrons and thus to control nuclear reactions
noun 1. an extremely dense, compact star composed primarily of neutrons, especially the collapsed core of a supernova. noun 1. a star that has collapsed under its own gravity to a diameter of about 10 to 15 km. It is composed mostly of neutrons, has a mass of between 1.4 and about 3 times that […]
[noo-truh-pee-nee-uh, nyoo-] /ˌnu trəˈpi ni ə, ˌnyu-/ noun, Medicine/Medical. 1. a decrease in the number of neutrophils in the blood: mild, moderate, or severe neutropenia. /ˌnjuːtrəˈpiːnɪə/ noun 1. an abnormal reduction in the number of neutrophils in the blood, as seen in certain anaemias and leukaemias neutropenia neu·tro·pe·ni·a (nōō’trə-pē’nē-ə, nyōō’-) n. The presence of abnormally […]
[noo-truh-fil, nyoo-] /ˈnu trə fɪl, ˈnyu-/ adjective 1. (of a cell or cell part) having an affinity for neutral dyes. noun 2. a phagocytic white blood cell having a lobulate nucleus and neutrophil granules in the cytoplasm. /ˈnjuːtrəˌfɪl/ noun 1. a leucocyte having a lobed nucleus and a fine granular cytoplasm, which stains with neutral […]