efficacy

BrE /ˈef.ɪ.kə.si/ AmE /ˈɛf.ɪ.kə.si/

noun en → es

1 EFFECTIVENESS [uncountable] B2

the ability of something to produce the desired effect or result

eficacia, efectividad

  • the efficacy of sth

Collocations efficacy of a drug · efficacy of a treatment

  • The efficacy of the new vaccine is still being tested.

    La eficacia de la nueva vacuna aún está siendo probada.

2 SUCCESS [uncountable] C1

the success with which something works or achieves its purpose

efectividad, éxito

  • efficacy of sth

Collocations efficacy in solving problems · efficacy in achieving goals

  • The efficacy of the new policy remains to be seen.

    La efectividad de la nueva política aún no se ha demostrado.