Dictionary

molecular weight

noun

Definition of MOLECULAR WEIGHT

:  the average mass of a molecule of a compound compared to 112 the mass of carbon 12 and calculated as the sum of the atomic weights of the constituent atoms
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First Known Use of MOLECULAR WEIGHT

1869
Medical Dictionary

molecular weight

noun

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

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