trapezium
/trəˈpiːzɪəm/noun
(pl. trapezia /-zɪə/或trapeziums)
1
- Geometry a type of quadrilateral【几何】（一种）四边形：
1.1
- Brit. a quadrilateral with one pair of sides parallel〈英〉梯形。
1.2
- N. Amer. a quadrilateral with no sides parallel〈北美〉不规则四边形。比较TRAPEZOID.
2
- （亦作os trapezium）Anatomy a carpal bone below the base of the thumb【剖】（近拇指根底处的）大多角骨。
词源
late 16th cent.: via late Latin from Greek trapezion, from trapeza 'table'. The term has been used in anatomy since the mid 19th cent.