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atomic mass unit

   Also found in: Medical, Legal, Financial, Acronyms, Encyclopedia, Wikipedia, Hutchinson 0.01 sec.
atomic mass unit
n. Abbr. amu
A unit of mass equal to 1/12 the mass of the most abundant isotope of carbon, carbon 12, which is assigned a mass of 12. Also called dalton.
atomic mass unit
n
(Mathematics & Measurements / Units) a unit of mass used to express atomic and molecular weights that is equal to one twelfth of the mass of an atom of carbon-12. It is equivalent to 1.66 ✕ 10-27 kg Abbreviation amu Also called unified atomic mass unit dalton
atomic mass unit
A unit of mass equal to 1/12 the mass of an atom of the most common isotope of carbon (carbon 12), which is assigned a mass of 12 and has a value of 1.660 × 10-24 grams. A hydrogen atom has a mass of 1 atomic mass unit since its mass is 1/12 the mass of carbon 12. Also called dalton.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.atomic mass unit - unit of mass for expressing masses of atoms or molecules
mass unit - a unit of measurement for mass


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? Mentioned in ? References in periodicals archive
 
Fractionation corrections were calculated from concurrent analyses of SRM 981 using the linear law, with the mass bias per atomic mass unit correction averaging 0.
Lead contamination in cocoa and cocoa products: isotopic evidence of ... by Flegal, A. Russell / Environmental Health Perspectives
But this element has an atomic mass that is more than 200 atomic mass Units (amu).
Name that element! by Bryner, Jeanna / Science World
2% per atomic mass unit (u) in the region of Ni and Cu (based on pure Fe and Cu measurements) and about 0.
Averaging of backscatter intensities in compounds by Westphal, Andrew J. / Journal of Research of the National Institute of Standards and Technology
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