▪ I. duple, a. (n.)
(ˈdjuːp(ə)l)
[ad. L. duplus double, f. duo two + -plus, from root ple- to fill.]
A. adj. Double, twofold. Obs. in gen. sense: in Math. applied to the proportion of two quantities one of which is double of the other; in Music, to ‘time’ or rhythm having two beats in the bar.
1542–3 Act 34 & 35 Hen. VIII, c. 27 §47 If it..be with a duple voucher, then sixe shillinges and .viii. d. 1609 Douland Ornith. Microl. 19 For example sake 6 and 12 will make a duple reason [= ratio]. 1656 Stanley Hist. Philos. v. (1701) 162/2 By finding two mean proportionals between two right lines in a Duple proportion. 1664 Butler Hud. ii. ii. 269 A breach of Oath is Duple And either way admits a Scruple. 1725–52 Chambers Cycl. s.v. Time, Common or duple Time is of two species. The first, when every bar or measure is equal to a semi-breve... The second, where every bar is equal to a minim. a 1763 Byrom Robbery Camb. Coach (R.). Made the red-rugg'd collector's income duple. 1881 W. S. Pratt in Gladden Par. Probl. 460 Duple and quadruple rhythms are the best. |
† B. n. A double; = double n. 1. Obs.
1609 Douland Ornith. Microl. 61 You shall find it a Duple. 1650 Bulwer Anthropomet. 63 The proportion of a half part to a duple. 1726 Leoni tr. Alberti's Archit. II. 88/2 Four..the Duple of two. 1787 Sir J. Hawkins Johnson 535 Mathematical ratios of a duple and triple. |
▪ II. † ˈduple, v. Obs.
[ad. L. duplāre to double, f. dupl-us duple.]
trans. To double; to make twice as much or many.
c 1425 Found. St. Bartholomew's (E.E.T.S.) 63 Rehersyng, and duplynge prayers. 1654 Vilvain Epit. Ess. vi. lxxxii, That dupled force. 1694 Holder Harmony (1731) 116 Dupling the Terms of the Ration. |