Is “Trapezium” a Scrabble word?
Yes
TRAPEZIUM
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Trapezium
/tɹəˈpiː.zi.əm/
noun
1.A four-sided polygon with two sides parallel
2.A four-sided polygon with no parallel sides and no sides equal; a simple convex irregular quadrilateral.
3.The trapezium bone of the wrist.
Synonyms: trapezoid, irregular, quadrilateral, trapezoid, trapeze