From Longman Dictionary of Contemporary EnglishRelated topics: Physicsldoce_012_batomat‧om /ˈætəm/ ●●○ noun [countable]1HPthe smallest part of an element that can existalone or can combine with other substances to form a molecule
carbon atomsatom of
two atoms of hydrogen2AMOUNTa very small amount of something – used for emphasisatom of
There isn’t an atom of truth in it.Examples from the Corpusatom• The valency of an atom in a covalent molecule is the number of electronsshared by the atom in forming the bond.• an atom of truth• In graphite the carbonatoms are arranged in flathexagonslayered on top of each other.• Quarksunite to form protons, neutrons and electrons, which in turn unite to form atoms.• The formula also shows the number of moles of atoms of each element in one mole of molecules.• Talk of probability waves and eigen values does not undermine the reality of atoms and molecules.Originatom(1500-1600)Latinatomus, from Greek, from atomos“that cannot be divided”, from temnein“to cut”
