noun, plural tra·pe·zi·ums, tra·pe·zi·a [truh-pee-zee-uh] /trəˈpi zi ə/.
- (in Euclidean geometry) any rectilinear quadrilateral plane figure not a parallelogram.
- a quadrilateral plane figure of which no two sides are parallel.
- British.trapezoid(def 1a).
Origin of trapezium
noun plural -ziums or -zia (-zɪə)
Word Origin for trapezium
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.