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cell |
a tiny unit of plant or animal life, having a nucleus and surrounded by a very thin membrane. [1/4 definitions] |
electron |
a very small particle that moves outside the nucleus of an atom. Electrons have a negative charge. |
fission |
the splitting of the nucleus of an atom into two or more nuclei. This makes more atoms of lighter elements and gives off large amounts of energy. |
neutron |
a small particle present in the nucleus of all atoms except the hydrogen atom. Neutrons have no electrical charge. The mass of a neutron is about equal to the mass of a proton. |
nuclear |
of, or having to do with, or being the nucleus of an atom or a cell. [1/3 definitions] |
nuclei |
plural of "nucleus." |
nucleus |
The nucleus of something is the essential, central part of it. Everything else is around it and depends on it. |
proton |
a tiny particle in the nucleus of an atom. A proton has a positive electrical charge. |
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