molecular weight

Noun
  1. (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule (synset 105033478)
    referred to in: chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions
    is a type of: mass - the property of a body that causes it to have weight in a gravitational field
    same as: relative molecular mass

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