Definition of "4to" [4to]

• Abbreviation of quarto, a paper size. (noun)
• Abbreviation of quarto, a corresponding book size. (noun)

Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License

• "RumnyMtadi the plaints of, 4to on the timetj 4to» 2t. — - • — xxtx."
• "The British Museum has an edition in 4to published in 1772, in farthing numbers, every Monday, Wednesday and Friday."
• "Latin and English, in 4to; and his _prelectiones in confessionem fidei_, or truth's victory over error, &c. in folio; his _therapeutica sacra_, or cases of conscience resolved, in Latin 4to, in English 8vo; a treatise of the promises 12mo printed at Dublin in 1630."