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Definition of Molecular weight
1. Noun. (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule.
Generic synonyms: Mass
Category relationships: Chemical Science, Chemistry
Definition of Molecular weight
1. Noun. (chemistry) the sum of the atomic weights of every atom in a molecule ¹
¹ Source: wiktionary.com
Medical Definition of Molecular weight
1. The sum of the atomic weight's of all the atoms constituting a molecule; the mass of a molecule relative to the mass of a standard atom, now 12C (taken as 12.000). Relative molecular mass (Mr) is the mass relative to the dalton and has no units. See: atomic weight. Synonym: molecular mass, molecular weight ratio, relative molecular mass. (05 Mar 2000)
Lexicographical Neighbors of Molecular Weight
Literary usage of Molecular weight
Below you will find example usage of this term as found in modern and/or classical literature:
1. Chemical Abstracts by American Chemical Society (1908)
"Colorimetric Method for Determining the molecular weight of ... molecular masses
is constant, ie, ity of color decreases with increasing molecular weight. ..."
2. Principles of chemical philosophy by Josiah Parsons Cooke (1874)
"molecular weight AND CONSTITUTION. bears the same relation to 100 that the weight
of two atoms of potassium bears to the weight of the molecule of potassio ..."
3. Science by American Association for the Advancement of Science (1883)
"Amino acid analysis showed that one of the 72000-molecular-weight fragments ...
Since the molecular weight ratio is 3:1 in all cases, cleavage of all three ..."
4. Journal of the American Chemical Society by American Chemical Society (1899)
"In making such comparison we must of course assign a molecular weight to the solute.
... Had a different molecular weight been assigned to the solute, ..."
5. A Text-book of Organic Chemistry by Arnold Frederik. Holleman (1920)
"Since there cannot be less than 1 atom, or 32 parts by weight, of sulphur in the
protein molecule, this percentage points to a molecular weight of 3200, ..."
6. Proceedings of the Cambridge Philosophical Society by Cambridge Philosophical Society (1902)
"molecular weight of Glycogen. By HENRY JACKSON, MA, Downing College. ... 21)
applying Raoult's method of determining the molecular weight found a higher ..."
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