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°.
Sex`to*dec"i*mo (?), a.
[L. sextus- decimus the sixteenth; sextus the
sixth (fr. sex six) + decimus the tenth, from decem ten. See - mo.]
Having sixteen leaves to a sheet; of, or equal to, the size of one fold of a sheet of printing paper when folded so as to make sixteen leaves, or thirty-two pages; as, a sextodecimo volume.
Hear it pronounced