molecular weight

2 ENTRIES FOUND:

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

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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