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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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