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trapezium

PRIMARY MEANINGS OF: trapezium

1
n
a quadrilateral with no parallel sides
2
n
the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals
FULL DEFINITIONS OF: trapezium
1

n a quadrilateral with no parallel sides

Antonyms:
parallelogram
a quadrilateral whose opposite sides are both parallel and equal in length
Type of:
quadrangle, quadrilateral, tetragon
a four-sided polygon
2

n the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals

Synonyms:
os trapezium, trapezium bone
Type of:
carpal, carpal bone, wrist bone
any of the eight small bones of the wrist of primates
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