英语词汇“polyacron”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

polyacron n.

Brit.

/ˌpɒlɪˈakrɒn/

/ˌpɒlɪˈakr(ə)n/

U.S.

/ˌpɑliˈæˌkrɑn/

/ˌpɑliˈækrən/

(plural polyacrons, polyacra) [ < poly- comb. form + ancient Greek ἄκρον summit, use as noun of neuter of ἄκρος highest, topmost (see acro- comb. form)] Geometry rare a solid figure having many vertices; a polyhedron (classified according to the number of its vertices).

ΘΚΠ

the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > polyhedron

polyhedron1570

pyritohedron1841

polyacron1862

1862 Mem. Literary & Philos. Soc. Manch. 3rd Ser. 1 249 A method for the derivation of the ∆ faced polyacrons of a given number of summits from those of the next inferior number of summits.

1929 D. M. Y. Sommerville Introd. Geom. N Dimensions vii. 102 To distinguish between a polytope considered with respect to its faces and its vertices, we may call it in the latter case a polycorypha. [Note] Cayley uses the term polyacron.

单词	polyacron
释义	> as lemmas polyacron polyacron n. Brit. /ˌpɒlɪˈakrɒn/ , /ˌpɒlɪˈakr(ə)n/ , U.S. /ˌpɑliˈæˌkrɑn/ , /ˌpɑliˈækrən/ (plural polyacrons, polyacra) [ < poly- comb. form + ancient Greek ἄκρον summit, use as noun of neuter of ἄκρος highest, topmost (see acro- comb. form)] Geometry rare a solid figure having many vertices; a polyhedron (classified according to the number of its vertices). ΘΚΠ the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > polyhedron polyhedron1570 pyritohedron1841 polyacron1862 1862 Mem. Literary & Philos. Soc. Manch. 3rd Ser. 1 249 A method for the derivation of the ∆ faced polyacrons of a given number of summits from those of the next inferior number of summits. 1929 D. M. Y. Sommerville Introd. Geom. N Dimensions vii. 102 To distinguish between a polytope considered with respect to its faces and its vertices, we may call it in the latter case a polycorypha. [Note] Cayley uses the term polyacron. extracted from poly-comb. form < as lemmas
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> as lemmas