back-of-the-envelope

adjective

: done quickly to provide a rough estimate : not exact
did a back-of-the-envelope calculation
His method is, in effect, a back-of-the-envelope time-and-motion study.Ian Stewart

Examples of back-of-the-envelope in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The economist Robin Hanson’s back-of-the-envelope calculations suggest that twenty-third-century America will be dominated by three hundred million Amish people. Gideon Lewis-Kraus, The New Yorker, 24 Feb. 2025 All of which is another way to say our back-of-the-envelope math is an attempt to provide fans with a reasonable assessment of the situation for both conferences. Jon Wilner, The Mercury News, 20 Feb. 2025 With that back-of-the-envelope math in mind, NBCUniversal greenlit the film for Peacock in the U.S. and a theatrical release in the rest of the world. Rebecca Rubin, Variety, 12 Feb. 2025 To the contrary, the vast, vast, vast majority of rides are without incident, and though there’s no rigorous way to compare underground to above ground, a back-of-the-envelope analysis suggests the former is actually safer than the latter. New York Daily News Editorial Board, New York Daily News, 27 Dec. 2024 The remaining amount — somewhere around $500 million, based on my back-of-the-envelope calculation — deserves careful scrutiny. David Greising, Chicago Tribune, 6 Dec. 2024 Our back-of-the-envelope analysis puts the median age of the cable MNF base at around 48 years, while ABC’s is about 57 years. Anthony Crupi, Sportico.com, 6 Dec. 2024 At a price of $30 per month per user, back-of-the-envelope math equates to $3.6 million annually for 10,000 employees. Eric Rosenbaum, CNBC, 29 Oct. 2024 Precise figures are tricky to obtain but, according to a back-of-the-envelope calculation by Inogwabini, just a few dozen of the perhaps 300 scientists publishing on conservation topics related to the Congo Basin are from the DRC itself. Byemmet Livingstone, science.org, 3 Oct. 2024

Word History

First Known Use

1968, in the meaning defined above

Time Traveler
The first known use of back-of-the-envelope was in 1968

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Cite this Entry

“Back-of-the-envelope.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/back-of-the-envelope. Accessed 13 Mar. 2025.

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