ul·​tra·​ef·​fi·​cient ˌəl-trə-i-ˈfi-shənt How to pronounce ultraefficient (audio)
: producing desired effects with very little or no waste
an ultraefficient engine

Examples of ultraefficient in a Sentence

Recent Examples on the Web These ultraefficient electric vehicles could reduce the need for charging stops for all but the longest road trips. Zlati Meyer, WSJ, 9 June 2023 As Americans became enamored of Toyota’s ultraefficient production practices, Mr. Toyoda started a management training center to help U.S. businesses. Ben Dooley, New York Times, 16 Feb. 2023 Decades of selective breeding for better berries ensued, together with the development of ultraefficient packing methods and mechanical harvesters. Yasmin Tayag, The Atlantic, 4 Oct. 2022 The developers said the ultraefficient design of those units appeals to a demographic that’s looking to downsize and simplify their life, but who still want to take advantage of all the benefits of living in a thriving, urban environment. Jim Buchta, Star Tribune, 18 Oct. 2020 Extract frozen gas from permafrost or from the ocean floor to power new, ultraefficient turbines. Discover Magazine, 16 Feb. 2012

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

Word History

First Known Use

1890, in the meaning defined above

Time Traveler
The first known use of ultraefficient was in 1890

Dictionary Entries Near ultraefficient

Cite this Entry

“Ultraefficient.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultraefficient. Accessed 22 Jul. 2024.

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