Octodecimo

[,ɒktәu'desimәu]

Definition

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

(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¡, and called eighteenmo.

Editor: Natasha

Definition

adj. having eighteen leaves to the sheet contracted 18mo.—adj. Octodec′imal (crystal.) having eighteen faces.

Edited by Christine