duo

a., n. See Dodecahedral, and Dodecahedron. [ 1913 Webster ]

a. [ L. duodecennis; duodecim twelve + annus year. ] Consisting of twelve years. [ R. ] Ash. [ 1913 Webster ]

a. [ L. duodecim twelve. See Dozen. ] Proceeding in computation by twelves; expressed in the scale of twelves. -- Du`o*dec"i*mal*ly, adv. [1913 Webster]

n. 1. A twelfth part; as, the duodecimals of an inch. [ 1913 Webster ]

2. pl. (Arch.) A system of numbers, whose denominations rise in a scale of twelves, as of feet and inches. The system is used chiefly by artificers in computing the superficial and solid contents of their work. [ 1913 Webster ]

a. [ L. duodecim twelve + findere to cleave. ] Divided into twelve parts. [ 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. duo two + &unr_; decuple. ] Consisting of twelves. Arbuthnot. [ 1913 Webster ]