TRAPEZIUM (trapezia)

Pronunciation (US):

(GB):

Irregular inflected form: trapezia   

 Dictionary entry overview: What does Trapezium mean? 

• TRAPEZIUM (noun)
  The noun TRAPEZIUM has 3 senses:

1. a quadrilateral with no parallel sides

2. a multiple star in the constellation of Orion

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

  Familiarity information: TRAPEZIUM used as a noun is uncommon.

 Dictionary entry details 

• TRAPEZIUM (noun)

Sense 1

Meaning:

A quadrilateral with no parallel sides

Classified under:

Nouns denoting two and three dimensional shapes

Hypernyms ("trapezium" is a kind of...):

quadrangle; quadrilateral; tetragon (a four-sided polygon)

Domain region:

America; the States; U.S.; U.S.A.; United States; United States of America; US; USA (North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776)

Antonym:

parallelogram (a quadrilateral whose opposite sides are both parallel and equal in length)

Sense 2

Meaning:

A multiple star in the constellation of Orion

Classified under:

Nouns denoting natural objects (not man-made)

Hypernyms ("Trapezium" is a kind of...):

multiple star (a system of three or more stars associated by gravity)

Sense 3

Meaning:

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

Classified under:

Nouns denoting body parts

Synonyms:

os trapezium; trapezium; trapezium bone

Hypernyms ("trapezium" is a kind of...):

carpal; carpal bone; wrist bone (any of the eight small bones of the wrist of primates)

 Context examples 

A plane joint primarily between the second metacarpal and the trapezoid, which also connects with the trapezium and capitate.

(Carpometacarpal Joint 2, NCI Thesaurus)

A saddle-shaped synovial joint between the metacarpal of the thumb and the trapezium.

(Carpometacarpal Joint 1, NCI Thesaurus)

The eight bones of the wrist: capitate bone, hamate bone, lunate bone (SEMILUNAR BONE), pisiform bone, SCAPHOID BONE, trapezium bone, trapezoid bone and triquetral bone.

(Carpal Bone, NLM, Medical Subject Headings)