| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024pol•y•he•dron /ˌpɑliˈhidrən/USA pronunciation n. [countable], pl. -drons, -dra /-drə/.USA pronunciation - Mathematicsa solid figure having many faces.
pol•y•he•dral, adj. WordReference Random House Unabridged Dictionary of American English © 2024pol•y•he•dron (pol′ē hē′drən),USA pronunciation n., pl. -drons, -dra (-drə).USA pronunciation - Mathematicsa solid figure having many faces. See illus. under dodecahedron, icosahedron, octahedron, pentahedron, tetrahedron.
- Greek polýedron, neuter of polýedros having many bases. See poly-, -hedron
- 1560–70
Collins Concise English Dictionary © HarperCollins Publishers:: polyhedron /ˌpɒlɪˈhiːdrən/ n ( pl -drons, -dra / -drə/)- a solid figure consisting of four or more plane faces (all polygons), pairs of which meet along an edge, three or more edges meeting at a vertex. In a regular polyhedron all the faces are identical regular polygons making equal angles with each other. Specific polyhedrons are named according to the number of faces, such as tetrahedron, icosahedron, etc
Etymology: 16th Century: from Greek poluedron, from poly- + hedron side, baseˌpolyˈhedral adj |