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trapezium

[ truh-pee-zee-uhm ]

noun

, plural tra·pe·zi·ums, tra·pe·zi·a [tr, uh, -, pee, -zee-, uh].
  1. Geometry.
    1. (in Euclidean geometry) any rectilinear quadrilateral plane figure not a parallelogram.
    2. a quadrilateral plane figure of which no two sides are parallel.
  2. Anatomy. a bone in the wrist that articulates with the metacarpal bone of the thumb.


trapezium

/ trəˈpiːzɪəm /

noun

  1. a quadrilateral having two parallel sides of unequal length Usual US and Canadian nametrapezoid
  2. a quadrilateral having neither pair of sides parallel
  3. a small bone of the wrist near the base of the thumb
“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

trapezium

/ trə-pēzē-əm /

, Plural trapeziums

  1. A four-sided plane figure having no parallel sides.
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Derived Forms

  • traˈpezial, adjective
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Other Words From

  • tra·pezi·al adjective
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Word History and Origins

Origin of trapezium1

1545–55; < New Latin < Greek trapézion kind of quadrilateral, literally, small table, equivalent to trápez ( a ) table (shortening of *tetrapeza object having four feet, equivalent to tetra- four + péza foot, akin to poús, podós; tetra-, foot ) + -ion diminutive suffix
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Word History and Origins

Origin of trapezium1

C16: via Late Latin from Greek trapezion , from trapeza table
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Example Sentences

In a series of 8½ -by-11 drawings, the artist brings out circles and semicircles as well as squares and a trapezium.

Plans also call for an indoor trapeze center, which the school says would be the only trapezium in the country.

Plus some work on shape, so “boys, this is a trapezium”, and the like.

Sometimes, however, in certain varieties of horses the trapezium is developed, but then it is no more than a very small osseous nodule.

And let all quadrilaterals other than these be called trapezia.

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trapeziformtrapezius