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Examples of atomic mass in a Sentence
Recent Examples on the Web
How changes in atomic mass leave clues to our climatological past.
—Dan Zak, Washington Post, 15 July 2019
Not only should the chemistry of the two isotopes be the same, the slight difference in atomic mass largely washes out in the watery environment of the body.
—Jennifer Ouellette, Quanta Magazine, 2 Nov. 2016
Say, for example, that all of the gases and particles collected indicate the fission products are 6.2 percent atoms with an atomic mass of 137, 6.1 percent with 99, and so on.
—Andrew Karam, Popular Mechanics, 7 Jan. 2016
Some have theorized that the soda got its name from the atomic mass of lithium, which is roughly seven.
—Beth Mole, Ars Technica, 22 Sep. 2017
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Word History
First Known Use
1848, in the meaning defined above
Dictionary Entries Near atomic mass
Cite this Entry
“Atomic mass.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/atomic%20mass. Accessed 24 Dec. 2024.
Kids Definition
atomic mass
noun
: the mass of any kind of atom usually expressed in atomic mass units
Medical Definition
atomic mass
noun
: the mass of an atom usually expressed in atomic mass units
also
: atomic weight compare mass number
More from Merriam-Webster on atomic mass
Britannica.com: Encyclopedia article about atomic mass
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