eficacia

== Spanish == === Etymology === From Latin efficacia. === Pronunciation === IPA(key): /efiˈkaθja/ [e.fiˈka.θja] (Equatorial Guinea, Spain) IPA(key): /efiˈkasja/ [e.fiˈka.sja] (Latin America, Philippines) Rhymes: -aθja (Equatorial Guinea, Spain) Rhymes: -asja (Latin America, Philippines) Syllabification: e‧fi‧ca‧cia === Noun === eficacia f (plural eficacias) efficacy effectiveness Synonym: efectividad ==== Related terms ==== === Further reading === “eficacia”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8.1, Royal Spanish Academy [Spanish: Real Academia Española], 15 December 2025