Meanings
nounmolecular weight (countable and uncountable, plural molecular weights)
plural molecular weights
- countableuncountablechemistryThe sum of the atomic weights of every atom in a molecule.
Synonyms: molecular mass
Synonyms & antonyms
nounThe sum of the atomic weights of every atom in a molecule.
Similar
More synonyms by meaning
noun(chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule
Similar
relative molecular mass
Broader
Also see
Synonym sets from Open English WordNet, CC BY 4.0.
Translations
Chinese Cantonese 分子量
- 分子量 (fan⁶ zi² loeng⁶)the sum of the atomic weights of every atom in a molecule
Chinese Mandarin 分子量
- 分子量 (fēnzǐliàng)the sum of the atomic weights of every atom in a molecule
Finnish molekyylipaino
- molekyylipainothe sum of the atomic weights of every atom in a molecule
French masse moléculaire
- masse moléculairethe sum of the atomic weights of every atom in a molecule
German Molekulargewicht
- Molekulargewichtthe sum of the atomic weights of every atom in a molecule
Greek μοριακό βάρος
- μοριακό βάρος (moriakó város)the sum of the atomic weights of every atom in a molecule
Hungarian molekulatömeg
- molekulatömegthe sum of the atomic weights of every atom in a molecule
Italian massa molecolare, peso molecolare
- massa molecolarethe sum of the atomic weights of every atom in a molecule
- peso molecolarethe sum of the atomic weights of every atom in a molecule
Romanian masă moleculară, greutate moleculară
- masă molecularăthe sum of the atomic weights of every atom in a molecule
- greutate molecularăthe sum of the atomic weights of every atom in a molecule
Spanish peso molecular
- peso molecularthe sum of the atomic weights of every atom in a molecule
Tagalog mulatling bugat
- mulatling bugatthe sum of the atomic weights of every atom in a molecule
Cite this entry
APA
molecular weight. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/molecular%20weight
MLA
“molecular weight.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/molecular%20weight. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “molecular weight,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/molecular%20weight.
Source: molecular weight on Wiktionary, CC BY-SA 4.0.