trapezium

1 ENTRIES FOUND:
trapezium /trəˈpiːzijəm/ noun
plural trapeziums or trapezia /-zijə/ /trəˈpiːzijə/
trapezium
/trəˈpiːzijəm/
noun
plural trapeziums or trapezia /-zijə/ /trəˈpiːzijə/
Britannica Dictionary definition of TRAPEZIUM
[count] geometry
1 
US : a four-sided shape that has no parallel sides
— called also (British) trapezoid
2 
British : trapezoid 1