atom : Idioms & Phrases
Index
atom bomb
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noun a nuclear weapon in which enormous energy is released by nuclear fission (splitting the nuclei of a heavy element like uranium 235 or plutonium 239)
fission bomb; atomic bomb; plutonium bomb; A-bomb.
WordNet
atom smasher
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noun a scientific instrument that increases the kinetic energy of charged particles
particle accelerator; accelerator.
WordNet
atom-bomb
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verb bomb with atomic weapons
nuke.
WordNet
carbon atom
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noun an atom of carbon
WordNet
gram atom
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noun the quantity of an element whose weight in grams is numerically equal to the atomic weight of the element
gram-atomic weight.
WordNet
hydrogen atom
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noun an atom of hydrogen
WordNet
rutherford atom
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noun first modern concept of atomic structure; all of the positive charge and most of the mass of the atom are contained in a compact nucleus; a number of electrons (equal to the atomic number) occupy the rest of the volume of the atom and neutralize the positive charge
WordNet
Unsymmetrical carbon atom
(Chem.) , one which is united at once to four different atoms or radicals. This condition usually occasions physical isomerism, with the attendant action on polarized light.
Webster 1913
Vortex atom
(Chem.) , a hypothetical ring-shaped mass of elementary matter in continuous vortical motion. It is conveniently regarded in certain mathematical speculations as the typical form and structure of the chemical atom.