Dictionary

atomic weight

noun

Definition of ATOMIC WEIGHT

:  the mass of one atom of an element; specifically :  the average mass of an atom of an element as it occurs in nature that is expressed in atomic mass units — see element table

First Known Use of ATOMIC WEIGHT

1820
Medical Dictionary

atomic weight

noun

Medical Definition of ATOMIC WEIGHT

:  the mass of one atom of an element; specifically :  the average mass of an atom of an element as it occurs in nature that is expressed in atomic mass units—see element table

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