sextodecimo
/ˌsɛkstoʊˈdɛsɪmoʊ/
noun
- A book size resulting from folding a sheet of paper into 16 leaves (32 pages), or a book of this size; also called 16mo.
- Many 19th-century novels were published in sextodecimo format.
- The pocket-sized dictionary was printed in sextodecimo for easy carrying.
- The collector prized the tiny sextodecimo edition of Shakespeare's sonnets.