| The American Heritage® Dictionary of the English Language: Fourth Edition. 2000. |
| |
| tetrahedron |
| |
 |
| SYLLABICATION: | tet·ra·he·dron |
| PRONUNCIATION: |  t t r -h  drn |
| NOUN: | Inflected forms: pl. tet·ra·he·drons or tet·ra·he·dra (-dr)
A polyhedron with four faces. | | ETYMOLOGY: | Late Greek tetraedron, from Greek, neuter of tetraedros, four-faced : tetra-, tetra- + hedr , face of a geometric solid; see sed- in Appendix I.
| | |
| |
| The American Heritage® Dictionary of the English Language, Fourth Edition. Copyright © 2000 by Houghton Mifflin Company. Published by the Houghton Mifflin Company. All rights reserved. |
|
|
