molecular weight
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About Our Definitions: All forms of a word (noun, verb, etc.) are now displayed on one page.molecular weight
nounDefinition of MOLECULAR WEIGHT
: the average mass of a molecule of a compound compared to 1⁄12 the mass of carbon 12 and calculated as the sum of the atomic weights of the constituent atoms
See First Known Use of MOLECULAR WEIGHT
1869
molecular weight
noun (Medical Dictionary)Medical Definition of MOLECULAR WEIGHT
: the mass of a molecule that may be calculated as the sum of the atomic weights of its constituent atoms
molecular weight
noun (Concise Encyclopedia)Mass of a molecule of a substance, based on 12 as the atomic weight of carbon-12. It is calculated in practice by summing the atomic weights of the atoms making up the substance's molecular formula. The molecular weight of a hydrogen molecule (chemical formula H) is 2 (after rounding off); for many complex organic molecules (e.g., proteins, polymers) it may be in the millions.
Variants of MOLECULAR WEIGHT
molecular weight also called molecular mass
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