“trigonoid”的英文意思_释义_用法

单词

trigonoid

释义

trigonoid, a. and n. Geom.|ˈtrɪgənɔɪd|
[ad. Gr. τριγωνοειδής of triangular form: see trigon and -oid.]
a. adj. Resembling a triangle; approximately triangular.
b. n. A plane figure contained by three circular arcs of equal radius meeting at angles; a species of curvilinear triangle. So trigoˈnoidal a., (a) Nat. Hist. = trigonoid adj.; (b) Geom. ‘like a trigonoid’ (Cent. Dict. 1891).
1822J. Parkinson Outl. Oryctol. 217 Subcordated, trigonoidal.1873Salmon Higher Plane Curves 245 The quartic is a triacnodal curve composed of a trigonoid figure within the triangle and of the three vertices as acnodes.

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