equivalent weight

noun

The atomic weight of an element or radical divided by its valence; the molecular weight of a compound divided by its combining power in a specific reaction.

Meanings

nounequivalent weight (plural equivalent weights)

plural equivalent weights

  1. chemistryThe atomic weight of an element or radical divided by its valence; the molecular weight of a compound divided by its combining power in a specific reaction.

    The equivalent weight of an element or compound is that weight equivalent in reactive power to one atomic weight of hydrogen.

    1922, Leicester F. Hamilton, Calculations of Analytical Chemistry, page 38
    1 more example

    In the proportion d : p :: 1 : v, as applied to any liquid or solid species, p does not represent its real equivalent weight, but the weight of the normal species which, by its condensation, gives rise to the liquid or solid.

    1888, Thomas Sterry Hunt, A New Basis for Chemistry, page 149

    Synonyms: equivalent mass, gram equivalent

Synonyms & antonyms

nounThe atomic weight of an element or radical divided by its valence; the molecular weight of a compound divided by its combining power in a specific reaction.

Similar
equivalent massgram equivalent

More synonyms by meaning

nounthe atomic weight of an element that has the same combining capacity as a given weight of another element; the standard is 8 for oxygen

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Finnish ekvivalenttimassa, ekvivalenttipaino
  • ekvivalenttimassaequivalent weight
  • ekvivalenttipainoequivalent weight
  • grammaekvivalenttiequivalent weight
Greek ισοδύναμο βάρος
  • ισοδύναμο βάρος (isodýnamo város)equivalent weight
Italian peso equivalente, massa equivalente
  • peso equivalenteequivalent weight
  • massa equivalenteequivalent weight
Polish gramorównoważnik
  • gramorównoważnikequivalent weight
Spanish peso equivalente, masa equivalente
  • peso equivalenteequivalent weight
  • masa equivalenteequivalent weight
Cite this entry
APA

equivalent weight. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/equivalent%20weight

MLA

“equivalent weight.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/equivalent%20weight. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “equivalent weight,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/equivalent%20weight.

Source: equivalent weight on Wiktionary, CC BY-SA 4.0.