The Collaborative International Dictionary
Sextodecimos
Sextodecimo \Sex`to*dec"imo\, n.; pl. Sextodecimos. A book composed of sheets each of which is folded into sixteen leaves; hence, indicating, more or less definitely, a size of a book; -- usually written 16mo, or 16[deg].
Wiktionary
sextodecimos
n. (plural of sextodecimo English)
Usage examples of "sextodecimos".
Some of the volumes I could see were massive, like quarried slabs, and were attached to the shelves by long chains that hung down like necklaces from their wooden bindings, while others, tiny sextodecimos, were no larger than snuff-boxes, small enough to fit in the palm of the hand, their pasteboard covers tied with faded ribbons or locked with tiny clasps.