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单词 duodecimal
释义

duodecimaladj.n.

/djuːəʊˈdɛsɪməl/
Etymology: < Latin duodecimus twelfth, < duodecim twelve: see -al suffix1. Compare French duodécimal (1801 Hauy).
A. adj.
Relating to twelfth parts or to the number twelve; proceeding by twelves.
ΘΚΠ
the world > relative properties > number > specific numbers > eleven to ninety-nine > [adjective] > twelve > counting in twelves
duodecimal1727
tolfraedic1813
uncial1842
duodenary1857
1727 J. Jordaine (title) Duodecimal Arithmetick and Mensuration improved.
1749 Acct. Voy. for Discov. North-west Passage II. 56 A duodecimal Progression.
1857 Sat. Rev. 3 448/1 A strictly duodecimal coinage.
B. n.
plural duodecimals n. a method of multiplying together quantities denoting lengths given in feet, inches, twelfths of an inch, etc., without reducing them to one denomination; also called cross-multiplication.The method is essentially that of long multiplication, but in the duodecimal scale instead of the decimal. The successive terms of the result denote square feet, twelfths of a square foot, square inches, etc.
ΘΚΠ
the world > relative properties > number > arithmetic or algebraic operations > [noun] > multiplication > of feet and inches
cross-multiplication1703
duodecimals1714
1714 S. Cunn (title) A new and compleat treatise of the doctrine of fractions..with..an epitome of duodecimals.
1802 P. Barlow (title) On the Method of Transforming a Number from one Scale of Notation to another, and its Application to the rule of Duodecimals.
1859 B. Smith Arith. & Algebra (ed. 6) 167 This method is styled Cross Multiplication or Duodecimals, and it is generally employed by painters, bricklayers, &c., in measuring work.

Derivatives

duoˈdecimally adv.
ΚΠ
1847 J. Craig New Universal Dict. Duodecimally, by duodecimals.
This entry has not yet been fully updated (first published 1897; most recently modified version published online September 2018).
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adj.n.1714
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更新时间:2025/2/24 6:00:12