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单词 explementary
释义

explementaryadj.

Brit. /ɛksplᵻˈmɛnt(ə)ri/, U.S. /ˌɛkspləˈmɛn(t)əri/, /ˌɛkspləˈmɛntri/
Origin: Formed within English, by derivation. Etymons: explement n., -ary suffix1.
Etymology: < explement n. + -ary suffix1.
Mathematics and Surveying. Now rare.
Of an angle or arc: that is an explement (explement n. 2) of a given angle or arc. Also of two or more angles or arcs: that are explements of one another. Cf. complementary adj. 1c, supplementary adj. 2c.
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the world > relative properties > number > geometry > angle > [adjective] > other
sidelong1654
semirect1656
subtended1759
supplementary1809
explementary1830
reflectional1848
reflex1869
multi-angled1908
1830 P. Morton Geometry iii. ii. 85/2 An angle takes the name of an explementary angle, when together with the adjoining and opposite angle it fills up the whole space about the angular point.
1896 J. A. Gillet Euclidean Geom. iii. i. 115 Equal or explementary arcs of the same circle or of equal circles have equal chords.
1922 C. A. Willis Plane Geom. xii. 179 How many degrees are subtended by the explementary central angle?
1956 Navigation Dict. (U.S. Navy Hydrogr. Office) 77/2 Thus, 150° is the explement of 210° and the two are said to be explementary.
This is a new entry (OED Third Edition, September 2016; most recently modified version published online March 2022).
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adj.1830
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更新时间:2024/12/24 4:17:41