'one-sheet' originates from English, formed from the words 'one' and 'sheet,' where 'one' meant 'single' and 'sheet' meant 'a flat piece of paper.'

'one-sheet' developed in the early 20th century as a term for a single-sheet poster (often for theatrical films). It first appeared as the phrase 'one sheet' and later came to be written hyphenated as 'one-sheet', especially in industry contexts.

Initially it meant simply 'a single sheet of paper,' but over time it became specialized to mean a single-sheet promotional poster (notably for films) and, by extension, any single-page promotional or informational document.