TRAPEZOID

trapezoid, trapezoid bone, os trapezoideum

(noun) the wrist bone between the trapezium and the capitate bones

trapezoid

(noun) a quadrilateral with two parallel sides

Source: WordNet® 3.1


Etymology

Noun

trapezoid (plural trapezoids)

(geometry, US) A (convex) quadrilateral with two (non-adjacent) parallel sides.

(geometry, British, AU, NZ) A convex quadrilateral with no sides parallel and no equal sides.

(anatomy) The trapezoid bone of the wrist.

Synonyms

• (geometry, convex quadrilateral with two non-adjacent parallel sides): (British) trapezium

• (geometry, convex quadrilateral with no parallel sides): irregular quadrilateral, (US) trapezium

Source: Wiktionary


Trap"e*zoid, n. Etym: [Gr. trapézoïde. See Trapezium.]

1. (Geom.)

Definition: A plane four-sided figure, having two sides parallel to each other.

2. (Anat.)

Definition: A bone of the carpus at the base of the second metacarpal, or index finger.

Trap"e*zoid, a.

1. Having the form of a trapezoid; trapezoidal; as, the trapezoid ligament which connects the coracoid process and the clavicle.

2. (Anat.)

Definition: Of or pertaining to the trapezoid ligament; as, the trapezoid line.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

3 April 2025

WHOLE

(noun) an assemblage of parts that is regarded as a single entity; “how big is that part compared to the whole?”; “the team is a unit”


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Coffee Trivia

Some 16th-century Italian clergymen tried to ban coffee because they believed it to be “satanic.” However, Pope Clement VII loved coffee so much that he lifted the ban and had coffee baptized in 1600.

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