trapezium: a four-sided figure in which no two sides are parallel.
Well, it's much the same way with me since my stallion William died—of trapezium, I think the doctor said.
Their circuit may in everyday speech be called a square, though strict mathematical accuracy must pronounce it to be a trapezium.
His court must therefore have been a trapezium with its smallest side opposite to the pylon, rather than a rectangle.
To find the area of a trapezium: Divide it into two triangles and find the areas of the latter by the first rule.
There was a curious thirteenth-century chest, trapezium in form, and said to be the only one of that shape in the West of England.
Strictly speaking the peninsula on which the city stands is of the form of a trapezium.
Below it lies the city in a plain of the form of a trapezium, at the very foot of the Acrocorinthus.
The city of Tralles is built upon ground in the shape somewhat of a trapezium.
Its form is that of a trapezium, or quadrilateral figure whose sides are unequal.
1560s, from Late Latin trapezium, from Greek trapezion "irregular quadrilateral," literally "a little table," diminutive of trapeza "table," from tra- "four" (see four) + peza "foot, edge," related to pous (see foot (n.)). Before 1540s, Latin editions of Euclid used the Arabic word helmariphe. As the name of a bone in the wrist, it is recorded from 1840.
trapezium tra·pe·zi·um (trə-pē'zē-əm)
n. pl. tra·pe·zi·ums or tra·pe·zi·a (-zē-ə)
A quadrilateral having no parallel sides.
A bone in the wrist at the base of the thumb, articulating with the first and second metacarpal, scaphoid, and trapezoid bones.