trapezium
noun [ C ] specialized uk/trəˈpiː.zi.əm/ us/trəˈpiː.zi.əm/ trapezia uk/trəˈpiː.zi.ə/ us/trəˈpiː.zi.ə/ trapeziums
(SHAPE)
mathematics UK梯形
a flat shape with four sides, where two of the sides are parallel
Synonym: trapezoid (SHAPE)
mathematics US不规则四边形
a flat shape with four sides, where no sides are parallel
Synonym: trapezoid (SHAPE)
(BONE)
anatomy 大多角骨
a bone in the wrist at the base of the thumb