icosahedron

英式音标：icosahedron怎么读

美式音标：icosahedron怎么读

icosahedron词义

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n. [数] 二十面体

词态变化

复数: icosahedrons;  icosahedra;


icosahedron双语例句

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1. The last of these figures known to Plato is the icosahedron.
柏拉图知道的最后一个这种构形是正二十面体.

来自辞典例句

icosahedron英文词源

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icosahedron (n.)
1560s, from Greek eikosahedron, neuter of eikosahedros, from eikosi "twenty" + -hedra "seat, base, chair, face of a geometric solid," from PIE root *sed- (1) "to sit" (see sedentary). Greek eikosi is from PIE *wikmti- "twenty," from *wi- "in half," hence "two" + (d)kmti-, from root *dekm- "ten" (see ten).