the smallest particle (1) of a chemical element that can exist the splitting of the atom Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water. The scientist Ernest Rutherford was the first person to split the atom. positively charged atoms Wordfinderphysicsamplitude, atom, energy, fission, force, frequency, gravity, molecule, nuclear, physics Wordfinderatomantiparticle, atom, electron, ion, neutron, nucleus, particle, positron, proton, valency Oxford Collocations Dictionary adjectivecharged, unstable, carbon, … verb + atomsplit atom + nounbomb See full entry See related entries: Molecules and matter Word Originlate 15th cent.: from Old French atome, via Latin from Greek atomos ‘indivisible’, based on a- ‘not’ + temnein ‘to cut’.
Check pronunciation: atom
