editio princeps
The first printed edition of a work previously only published in manuscript form.
editio princeps: the first time a manuscript becomes a printed book
An editio princeps is the original printed edition of any text that existed only as a manuscript before printing began. In industrial printing terms, it marks the moment a work moves from the scriptorum into type and press. The term applies whether that first printing happened in 1472 or last week, though it carries most weight in historical bibliography where it describes incunabula and early printed books from the fifteenth and sixteenth centuries.
The distinction matters because a manuscript and its printed offspring are not the same object. A typesetter preparing the editio princeps must parse handwritten copy, resolve abbreviations and variant letterforms, decide on capitalization and punctuation (often absent or inconsistent in manuscripts), and commit to a single reading where scribal hands disagree. Errors introduced at this stage propagate through all subsequent printings. Conversely, the editio princeps fixes the text in a way no manuscript could; multiple printed copies are identical, whereas no two scribal copies ever are.
Why the name matters in collecting and scholarship
Collectors and bibliographers prize the editio princeps because it represents an author's work at the threshold between oral and manuscript culture on one side and mass reproduction on the other. A first edition of Dante or Petrarch in print commands prices far above later impressions not because the ink is finer, but because it documents the moment print technology captured a canonical text. The editio princeps is also the closest printed version to the author's final manuscript intent, before centuries of editorial reinterpretation accumulated in later editions.
In modern printing, the term sees less use outside academic and antiquarian contexts, but the principle remains embedded in how publishers handle new works. A hardcover first edition is functionally the editio princeps of a contemporary book, even though the concept originated in a period when printing itself was revolutionary. Librarians and archivists still use the term to distinguish the chronologically and textually primary printed version from reprints, facsimiles, and derivative editions.