duodecennial (duodesenial)

[ The duodecimal system in liquid measures, which is found elsewhere, appears to be derived from the Babylonians. Von Ranke, Univ. Hist. (trans.), p. 19. Duodecimal arithmetic or scale. See duodenary arith metic or scale, under duodenary. II. n. 1. One of a system of numerals the base of which is twelve.-2. pl . An arithmetical rule for ascertaining the number of square feet, twelfths of feet, and square inches in a rectangular area or surface whose sides are given in feet and inches and twelfths of inches. The feet of the multiplier are first multiplied into the feet, inches, and twelfths of the multiplicand, giving square feet, twelfths, and inches. The inches of the multiplier are then multiplied into the feet and inches of the multiplicand, giving twelfths of feet and square inches, multiplied into the feet of the multiplicand, giving square inches. These three partial products are then added together to get the product sought. It is used by artificers. Also called duodecimal or cro multiplication . duodecimally (dū-ō-des'i-mal-i), adv . In a duodecimal manner; by twelves. duodecimfid (duō-de-sim'fid), a. [L. duode cim , twelve, + -fid us , findere , cleave, split (= E. bite ): see fi ion , etc.] Divided into twelve parts. duodecimo (du-o-desi-mō), n. and a. [Orig. in L. (NL.) phrase in duodecimo : in , prep., = E. in ; duodecimo , abl. of duodecimus , twelfth, duodecim , twelve.] I. n. 1. A size of page usually measuring, in the United States, about 54 inches in width and 7 inches in length, when the leaf is uncut, and corresponding to crown octavo of British publishers.-2. A book composed of sheets which, when folded, form twelve leaves of this size. - 3. In music , the interval of a twelfth. E. D. the twelfths of inches of the multiplier II. a . Consisting of sheets folded into twelve leaves; having leaves or pages measuring about 5ł by 7 inches. Often written 12mo or 12°. duo dec i mole (du-o-desi-mōl), n. [ duo- decimus, twelfth: see duodecimo .] In music , a group of twelve notes to be performed in the time of eight; a do dec up let. Duodecimpennatæ (dūō-de-sim-pe-nāʼtē), n. pl. [NL., duodecim , twelve, + penna- tus , winged, feathered.] In ornith ., in Sunde- vall's system, a cohort of Galline , composed of the American cura ows and guans, Cracida : so called from the 12 rectrices or tail-feathers. Also called Sylvicola.