plural of atomic number

plural of atomic winter

(philosophy) The doctrine that the world consists of ultimate logical "facts" (or "atoms") that cannot be broken down any further.

(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.

(physics) A nucleus of an atom; consisting of protons and neutrons, surrounded by an electron cloud.

(countable, military) A nuclear weapon that obtains its destructive energy from nuclear fission.

The mass of an atom. / (proscribed) atomic weight; the average mass of atoms of an element.

(physics, chemistry) The number of protons in an atom. Symbol: Z

(physics) Former term for the more specific relative atomic mass.

(physics) an early nuclear reactor fuelled by uranium and moderated with graphite