
1) Eighteenmo
Found on
https://www.crosswordclues.com/clue/octodecimo

• (n.) A book composed of sheets each of which is folded into eighteen leaves; hence; indicating more or less definitely a size of book, whose sheets are so folded; -- usually written 18mo or 18
Found on
http://thinkexist.com/dictionary/meaning/octodecimo/
Oc`todec'i·mo adjective [ Latin
octodecim eighteen. See
Octavo ,
Decimal , and
-mo .] Having eighteen leaves to a sheet; as, an
octodecimo form, book, leaf, size, etc.
Found on
http://www.encyclo.co.uk/webster/O/10
Oc`to·dec'i·mo noun ;
plural Octodecimos A book composed of sheets each of which is folded into eighteen leaves; hence; indicating more or less definitely a size of book, whose sheets are so folded; -- usually written 18mo or 18°, and called
eighteenmo .
Found on
http://www.encyclo.co.uk/webster/O/10
No exact match found.