Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

trapezoid

play
noun trap·e·zoid \ˈtra-pə-ˌzȯid\

Simple Definition of trapezoid

  • : a four-sided shape that has two sides that are parallel and two sides that are not parallel

Source: Merriam-Webster's Learner's Dictionary

Full Definition of trapezoid

  1. 1a British :  trapezium 1ab :  a quadrilateral having only two sides parallel

  2. 2 :  a bone in the wrist at the base of the metacarpal of the index finger

trapezoidal

play \ˌtra-pə-ˈzȯi-dəl\ adjective

Illustration of trapezoid

Origin and Etymology of trapezoid

New Latin trapezoïdes, from Greek trapezoeidēs trapezium-shaped, from trapeza table


First Known Use: circa 1706


TRAPEZOID Defined for Kids

trapezoid

play
noun trap·e·zoid \ˈtra-pə-ˌzȯid\

Definition of trapezoid for Students

  1. :  a flat geometric figure with four sides but with only two sides parallel




Medical Dictionary

trapezoid

play
noun trap·e·zoid \ˈtrap-ə-ˌzȯid\

Medical Definition of trapezoid

  1. :  a bone in the distal row of the carpus at the base of the index finger—called also lesser multangular, trapezoid bone, trapezoideum



Illustration of trapezoid


Learn More about trapezoid


Seen and Heard

What made you want to look up trapezoid? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to proceed clumsily or ineffectually

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

lavender-fields-in-france

Which of these is a synonym of caesura?

rebellion torrent interruption megillah
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ