atomic mass (redirected from Atomic masses)

atomic mass

n.

The mass of an atom, usually expressed in atomic mass units.

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atomic mass

The mass of a given atom or molecule, expressed in atomic mass units. Compare atomic weight. See also mass number.

Thesaurus

Noun

1.

atomic mass - (chemistry) the mass of an atom of a chemical element expressed in atomic mass units atomic weight, relative atomic mass mass - the property of a body that causes it to have weight in a gravitational field combining weight, eq, equivalent weight, equivalent - 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 chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions