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trapezoid
trap·e·zoid [ tráppə zòyd ] (plural trap·e·zoids)


noun 
Definition:
 
1. mathematics quadrilateral with two parallel sides: a quadrilateral that has two parallel sides
2. U.K. mathematics 
Same as  trapezium (sense 1)

3. anatomy wrist bone: a small bone in the wrist near the metatarsal bone that connects with the index finger

tra·pe·zoid·al [ tràppə zóyd'l ] adjective
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