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 WordNet Dictionary |
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| | Definition: | | [n] (chemistry) the ratio of the atomic mass of an element to half the atomic mass of carbon-12 |
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| | Synonyms: | | relative atomic mass |
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| | See Also: | | combining weight, eq, equivalent, equivalent weight, mass, meq, milliequivalent |
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| Biology Dictionary |
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| | Definition: | |
- This is the average mass of the naturally occurring isotopes of an element; the value takes into account the different natural abundances of the isotopes. The value is expressed relative to the value of exactly 12 for carbon-12
- The average weight of an atom of an element, i.e. the total mass of protons and neutrons in an atom.
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| | Synonyms: | | atomic mass |
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