back-of-the-envelope

adj
/ˌbæk‿əv ðiː ˈɛnvələʊp/UK/ˌbæk‿əv ði ˈɛnvəˌloʊp/US

Etymology

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.

Definitions

  1. Especially of a calculation, estimation, or other reasoning, or an idea

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

    • We can do some back-of-the-envelope calculations before all the facts come in.
    • [T]he original estimates are frequently back-of-the-envelope-type estimates made internally without detailed engineering studies, if you go all the way back to Day 1.

The neighborhood

Vish — recursive loop

No curated loop yet for back-of-the-envelope. Loops are being traced one word at a time while the ingestion pipeline matures.

sense glosses and etymology drawn from English Wiktionary · source · CC-BY-SA