ef·​fi·​cac·​i·​ty ˌe-fə-ˈka-sə-tē How to pronounce efficacity (audio)

Examples of efficacity in a Sentence

the limited efficacity of the primitive tool as an instrument for cutting raw meat
Recent Examples on the Web Employing touchscreens for voting results in the adoption of technology for its own sake rather than to provide efficacity. Letter Writers, Twin Cities, 10 Nov. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'efficacity.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Middle English efficacite, borrowed from Middle French & Latin; Middle French efficacité, borrowed from Latin efficācitāt-, efficācitās, from efficāc-, efficāx "capable of fulfilling a function, efficacious" + -itāt-, -itās -ity

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of efficacity was in the 15th century

Dictionary Entries Near efficacity

Cite this Entry

“Efficacity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/efficacity. Accessed 25 Jul. 2024.

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