back-of-the-envelope

English dictionary entry

Meanings

adj

Especially of a calculation, estimation, or other reasoning, or an idea: approximate, rough, simplified.

/ˌbæk‿əv ðiː ˈɛnvələʊp/ /-ˈɒnvələʊp/ /-ˈɒnvləʊp/ /ˌbæk‿əv ði ˈɛnvəˌloʊp/ /-ˈɑnvəˌloʊp/ /-ɛnvəˌlop/ En-au-back-of-the-envelope.ogg

back-of-the-envelope back-of-an-envelope

A reference to a calculation or an idea that occurs to one being jotted down on an available scrap of paper, such as the back of an envelope.

back-of-the-fag-packet back-of-the-napkin

napkin math

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