| 翻訳と辞書 |
Quincunx
A quincunx is a geometric pattern consisting of five points arranged in a cross, with four of them forming a square or rectangle and a fifth at its center.〔Webster's Collegiate Dictionary, 10th ed., as quoted by .〕 It forms the arrangement of five units in the pattern corresponding to the five-spot on six-sided dice, playing cards, and dominoes. It is represented in Unicode as or (for the die pattern) .
==Historical origins of the name==
The quincunx was originally a coin issued by the Roman Republic c. 211–200 BC, whose value was five twelfths (''quinque'' and ''uncia'') of an as, the Roman standard bronze coin. On the Roman quincunx coins, the value was sometimes indicated by a pattern of five dots or pellets. However, these dots were not always arranged in a quincunx pattern.
The OED dates the first appearances of the Latin word in English as 1545 and 1574 (“in the sense ‘five-twelfths of a pound or as’”). The first citation for “A pattern used for planting trees” dates from 1606. The OED also cites a 1647 reference to the German astronomer Kepler to the astronomical/astrological meaning.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Quincunx」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|