tetrahedron

Definitions  ·  Examples  ·  Pronunciations  ·  Etymologies  ·  Related  ·  Statistics  ·  Comments (5)  · 

View all »
Definitions (9)

Toggle American Heritage definitions American Heritage Dictionary (1)

  1. noun A polyhedron with four faces.

Toggle Century definitions Century Dictionary (6)

Toggle GNU Webster definitions GNU Webster's 1913 (1)

Toggle WordNet definitions WordNet (1)

Toggle elsewhere links Elsewhere on the web

View all »
Examples (48)

  • Each atom is covalently bonded to four neighbors to form the corners of a tetrahedron, a solid figure with four three-sided faces. —  F ;SF; - vol 091 issue 02 - August 1996
  • The next tetrahedron is a triangle of three balls with one ball on top, or four altogether. —  Asimov's Science Fiction - 1977_02(002)Summer
  • At ordinary pressures, silicon can form four (single) bonds with surrounding oxygens to form a tetrahedron, the “silicate tetrahedron,” a strong, compact unit that is the fundamental building block of silicate chemistry Some silicates, such as the mineral olivine, (Mg,Fe)2SiO4, contain the isolated SiO4 tetrahedron. —  Magazine - Analog Science Fiction And Fact - 2007 - Issue 03 - March (v1.0) [lit]
  • If three oxygens on every tetrahedron are shared, we get an infinite sheet structure. —  Magazine - Analog Science Fiction And Fact - 2007 - Issue 03 - March (v1.0) [lit]
  • Basically it's an adaptive tetrahedron, with actuators in each "leg" capable of adjusting the overall geometry. —  Fast Company
More examples »
 

Tags

tetrahedron hasn't been tagged yet.

Sign up or sign in to add tags.

Stats

This word has been looked up 82 times.

stop updating
On Twitter

Photos from

flickr images

Etymologies (2)

Toggle American Heritage etymologies American Heritage Dictionary (1)

  1. Late Greek tetraedron, from Greek, neuter of tetraedros, four-faced : tetra-, tetra- + hedrā, face of a geometric solid; see sed- in Indo-European roots.

Toggle Century etymologies Century Dictionary (1)

  1. Also tetraëdron; = French tétraédre = Spanish Portuguese tetraedro, from Greek τετρα-, four, + ε=δρα, seat, base.
 

Pronunciations
Record your own »
/tɛtrəˈhidrən/
by American Heritage

Charts
frequency chart

Bubble size: how much this word was used in a year

Bubble height: used more or less than expected, vs. all uses evenly distributed

You can expect to see this word about twice a year.

Recently looked up

informative · munged · brulee · APEX · vampire

Recent Favorites

pygopagus · sanglant · Astacus · sweetbread · qualms

Recent Pronunciations

wub wub · merch · these grunts every eight hours · haul it off to our darkest dungeon · send for a doctor