relative atomic mass (redirected from relative atomic masses)

relative atomic mass

n

(Chemistry) the ratio of the average mass per atom of the naturally occurring form of an element to one-twelfth the mass of an atom of carbon-12. Symbol A_r Abbreviation r.a.m Former name atomic weight

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relative atomic mass  (rl-tv)

See atomic weight.

Thesaurus

Noun

1.

relative atomic mass - (chemistry) the mass of an atom of a chemical element expressed in atomic mass units atomic mass, atomic weight 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