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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Link To tetrahedron
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Tetrahedron
is always a great word to know.
So is bezoar. Does it mean:
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a chattering or flighty, light-headed person. |
Collins
World English Dictionary
| tetrahedron (ˌtɛtrəˈhiːdrən) | |
| —n , pl -drons, -dra | |
| 1. | See also polyhedron a solid figure having four plane faces. A regular tetrahedron has faces that are equilateral triangles |
| 2. | any object shaped like a tetrahedron |
| [C16: from New Latin, from Late Greek tetraedron; see | |
| tetra'hedral | |
| —adj | |
| tetra'hedrally | |
| —adv | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
tetrahedron
solid figure contained by four triangular surfaces, 1570, from Late Gk. tetraedron, originally neuter of tetraedros (adj.) "four-sided," from tetra- "four" + hedra "seat, base, chair, face of a geometric solid," from PIE base *sed- "to sit" (see sedentary).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Science Dictionary
tetrahedron  (tět'rə-hē'drən) Pronunciation Key
Plural tetrahedrons or tetrahedra A polyhedron having four faces. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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