atomic weight

1. (chemistry) the mass of an atom of a chemical element expressed in atomic mass units (synset 105033101)
   referred to in: chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
   is a type of: mass - the property of a body that causes it to have weight in a gravitational field
   subtypes:

   • combining weight, eq, equivalent, equivalent weight - the atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen
   • meq, milliequivalent - one-thousandth of an equivalent
   same as: atomic mass, relative atomic mass

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