n. [ Gr. &unr_; (sc. &unr_;) Cimolian earth, fr. &unr_;, L. Cimolus, an island of the Cyclades. ] (Min.) A soft, earthy, clayey mineral, of whitish or grayish color. [ 1913 Webster ]

n. [ Prop., in sixteenth; fr. L. decimus tenth + sextus sixth. ] A book consisting of sheets, each of which is folded into sixteen leaves; hence, indicating, more or less definitely, a size of book; -- usually written 16mo or 16°. [ 1913 Webster ]

a. Having sixteen leaves to a sheet; as, a decimosexto form, book, leaf, size. [ 1913 Webster ]

n. [ Gr. &unr_; a test + -logy. ] A treatise on the art of testing, as in assaying metals, etc. [ 1913 Webster ]

a. [ L. in duodecimo in twelfth, fr. duodecimus twelfth, fr. duodecim twelve. See Dozen. ] Having twelve leaves to a sheet; as, a duodecimo from, book, leaf, size, etc. [ 1913 Webster ]

n.; pl. Duodecimos A book consisting of sheets each of which is folded into twelve leaves; hence, indicating, more or less definitely, a size of a book; -- usually written 12mo or 12°. [ 1913 Webster ]

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 ]

n.; pl. 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. [ 1913 Webster ]

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. [ 1913 Webster ]

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°. [ 1913 Webster ]

‖pr. n. pl. [ NL. See Turnix, and -morphous. ] (Zool.) A division of birds including Turnix and allied genera, resembling quails in appearance but differing from them anatomically. [ 1913 Webster ]