back-of-the-envelope

Значение (Английский)

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

Синонимы

Произносится как (IPA)
/ˌbæk‿əv ðiː ˈɛnvələʊp/
Этимология (Английский)

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.

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