octodecimo Meaning, Definition & Usage

Oc`todec"i*mo adjective

Etymology

L. octodecim eighteen. See Octavo, Decimal, and -mo.

Definitions

1. Having eighteen leaves to a sheet; as, an octodecimo form, book, leaf, size, etc.

Oc`to*dec"i*mo noun

Wordforms

plural Octodecimos

Definitions

1. 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.