Meaning of the word "atomic mass" in English

What does "atomic mass" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

atomic mass

US /əˈtɑː.mɪk mæs/
UK /əˈtɒm.ɪk mæs/
"atomic mass" picture

Noun

the mass of an atom of a chemical element expressed in atomic mass units

Example:
The atomic mass of carbon is approximately 12.011.
Students learned how to calculate the average atomic mass of isotopes.