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Definition of relative atomic mass noun from the Oxford Advanced Learner's Dictionary

relative atomic mass

noun
 
/ˌrelətɪv əˌtɒmɪk ˈmæs/
 
/ˌrelətɪv əˌtɑːmɪk ˈmæs/
(also atomic mass, atomic weight)
(chemistry)
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  1. the average mass of all the naturally occurring atoms of a chemical element
See relative atomic mass in the Oxford Advanced American DictionarySee relative atomic mass in the Oxford Learner's Dictionary of Academic English
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