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atomic bomb
(countable, military) A nuclear weapon that obtains its destructive energy from nuclear fission.
atomic orbital
(quantum mechanics, chemistry) A mathematical function that describes the wave-like behavior of either one electron or a pair of electrons in an atom. This function can be used to calculate the probability of finding any electron of an atom in any specific region around the atom's nucleus.
atomic nucleus
(physics) A nucleus of an atom; consisting of protons and neutrons, surrounded by an electron cloud.
atomic winter
(uncommon) Nuclear winter.
atomic pile
(physics) an early nuclear reactor fuelled by uranium and moderated with graphite
exotic atom
(physics, chemistry) the equivalent of an atom in which either the nucleus, or an electron, is replaced by some other subatomic particle
hadronic atom
(physics) a hydrogen-like system consisting of an ordinary nucleus with a hadron in orbit.
Atomic Age
The era, starting in the mid-1940s, during which nuclear energy was developed, and in which it was thought that all energy would be provided by such sources.
atomic battery
(physics) any device that converts the energy of particles emitted from atomic nuclei into electrical energy
Rydberg atom
(physics, chemistry) Any atom which has a single valence electron in a shell well outside any other electrons in the aton; approximates the hydrogen atom.
