efficacy的词源

英文词源

efficacy (n.)

1520s, from Latin efficacia "efficacy, efficiency," from efficax (genitive efficacis) "powerful, effectual, efficient," from stem of efficere "work out, accomplish" (see effect (n.)). Earlier in same sense was efficace (c. 1200), from Old French eficace (14c.), from Latin efficacia; also efficacite (early 15c.), from Latin efficacitatem.

中文词源

efficacy：功效

ef-, 向外。-fic, 做，词源同fact, effect.

该词的英语词源请访问趣词词源英文版：efficacy 词源，efficacy 含义。

efficacy：功效，功能

词根词缀： ef-(=ex-)出 + -fic-做,作 + -i- + -acy抽象名词,状态/性质