todec
1Octodecimo — Oc todec i*mo, a. [L. octodecim eighteen. See {Octavo}, {Decimal}, and { mo}.] Having eighteen leaves to a sheet; as, an octodecimo form, book, leaf, size, etc. [1913 Webster] …
1Octodecimo — Oc todec i*mo, a. [L. octodecim eighteen. See {Octavo}, {Decimal}, and { mo}.] Having eighteen leaves to a sheet; as, an octodecimo form, book, leaf, size, etc. [1913 Webster] …