Trapezium
Trapezium, plural trapezia, may refer to:
- Trapezium, in British and other forms of English, a trapezoid, a quadrilateral that has at least one pair of parallel sides
 - Trapezium, in North American English, an irregular quadrilateral with no sides parallel
 - Trapezium (bone), a bone in the hand
 - Trapezium Cluster, a group of stars in the Orion Nebula
 - Trapezia (genus), guard crabs
 

Comparisons of "trapezium" in both British and American English.
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