The bricks composing it are trapezoidal in shape, two of their edges being slightly rounded, the one concave, the other convex.
The area is trapezoidal; in other words, the sides vary in length.
The labrum, or upper lip, is separated by a deep suture from the clypeus, and is trapezoidal in form.
A section across the middle of the implement would be trapezoidal with incurved sides.
A slip-dovetail miter is one in which a trapezoidal shaped key is inserted in a dovetail socket cut straight across the miter.
In channels of trapezoidal form the velocity increases and diminishes with the discharge.
Bounded by twenty-four trapezoidal faces, and hence sometimes called a “trapezohedron.”
They consisted of shutters stiffened with four trapezoidal trusses.
In this feature Pompeii resembles the trapezoidal outlines of the Terremare (fig. 11).
The ground-plan is trapezoidal, and the walls rise vertically for a few feet, and are then rounded off into an arch.
1706, "a trapezium," from Modern Latin trapezoides, from Late Greek trapezoeides (Proclus), special use by Euclid of Greek trapezoeides "trapezium-shaped," from trapeza, literally "table" (see trapezium), + -oeides "shaped" (see -oid). Technically, a quadrilateral figure with no two sides parallel. But in English since c.1800, often confused with trapezium in its sense of "a quadrilateral figure having only two sides parallel."
trapezoid trap·e·zoid (trāp'ĭ-zoid')
A quadrilateral having two parallel sides.
A small bone in the wrist situated near the base of the index finger and articulating with the second metacarpal, trapezium, capitate, and scaphoid bones.
A four-sided polygon in which two sides are parallel and two are not.