icosahedron

[ ahy-koh-suh-hee-druhn, ahy-kos-uh- ]

/ aɪˌkoʊ səˈhi drən, aɪˌkɒs ə- /

noun, plural i·co·sa·he·drons, i·co·sa·he·dra [ahy-koh-suh-hee-druh, ahy-kos-uh-]. /aɪˌkoʊ səˈhi drə, aɪˌkɒs ə-/.

a solid figure having 20 faces.

Origin of icosahedron

1560–70; <Greek eikosáedron, equivalent to eikosa- (variant of eikosi-, combining form of eíkosi twenty) + -edron-hedron

OTHER WORDS FROM icosahedron

i·co·sa·he·dral, adjective

Words nearby icosahedron

iconology, iconomatic, iconophile, iconoscope, iconostasis, icosahedron, icositetrahedron, ICP, ICQ, ICS, ICSH

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for icosahedron

That for the tetrahedron has 12 for its order, for the cube (or octahedron) 24, and for the icosahedron (or dodecahedron) 60.
Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6|Various
The Icosahedron, having twenty equilateral triangles as faces.
Bygone Beliefs|H. Stanley Redgrove
Two of these generate the cube and the octahedron; five of these generate the dodecahedron and the icosahedron.
Occult Chemistry|Annie Besant and Charles W. Leadbeater
An icosahedron is a figure comprehended under twenty equal sides.
The Mystery of Space|Robert T. Browne

Associated words: vicenary, vigesimal, vigesimation, icosahedron.
Putnam's Word Book|Louis A. Flemming

British Dictionary definitions for icosahedron

icosahedron

/ (ˌaɪkəsəˈhiːdrən) /

noun plural -drons or -dra (-drə)

a solid figure having 20 faces. The faces of a regular icosahedron are equilateral triangles

Derived forms of icosahedron

icosahedral, adjective

Word Origin for icosahedron

C16: from Greek eikosaedron, from eikosi twenty + -edron -hedron

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for icosahedron

icosahedron

[ ī-kō′sə-hē′drən ]

Plural icosahedrons icosahedra

A polyhedron having twenty faces.

Other words from icosahedron

icosahedral adjective

单词	icosahedron
释义	icosahedron [ ahy-koh-suh-hee-druhn, ahy-kos-uh- ] / aɪˌkoʊ səˈhi drən, aɪˌkɒs ə- / noun, plural i·co·sa·he·drons, i·co·sa·he·dra [ahy-koh-suh-hee-druh, ahy-kos-uh-]. /aɪˌkoʊ səˈhi drə, aɪˌkɒs ə-/. a solid figure having 20 faces. Origin of icosahedron 1560–70; <Greek eikosáedron, equivalent to eikosa- (variant of eikosi-, combining form of eíkosi twenty) + -edron-hedron OTHER WORDS FROM icosahedron i·co·sa·he·dral, adjective Words nearby icosahedron iconology, iconomatic, iconophile, iconoscope, iconostasis, icosahedron, icositetrahedron, ICP, ICQ, ICS, ICSH Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for icosahedron That for the tetrahedron has 12 for its order, for the cube (or octahedron) 24, and for the icosahedron (or dodecahedron) 60. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 6\|Various The Icosahedron, having twenty equilateral triangles as faces. Bygone Beliefs\|H. Stanley Redgrove Two of these generate the cube and the octahedron; five of these generate the dodecahedron and the icosahedron. Occult Chemistry\|Annie Besant and Charles W. Leadbeater An icosahedron is a figure comprehended under twenty equal sides. The Mystery of Space\|Robert T. Browne Associated words: vicenary, vigesimal, vigesimation, icosahedron. Putnam's Word Book\|Louis A. Flemming British Dictionary definitions for icosahedron icosahedron / (ˌaɪkəsəˈhiːdrən) / noun plural -drons or -dra (-drə) a solid figure having 20 faces. The faces of a regular icosahedron are equilateral triangles Derived forms of icosahedron icosahedral, adjective Word Origin for icosahedron C16: from Greek eikosaedron, from eikosi twenty + -edron -hedron Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for icosahedron icosahedron [ ī-kō′sə-hē′drən ] Plural icosahedrons icosahedra A polyhedron having twenty faces. Other words from icosahedron icosahedral adjective The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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