Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • 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

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

trap·e·zoi·dal play \ˌtra-pə-ˈzȯi-dəl\ adjective

Illustration of trapezoid

Origin 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

  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

February 5, 2016

bread traditionally eaten on Shabbat

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image1037863653

Which of the following refers to thin, bending ice, or to the act of running over such ice?

duvet spindrift kittly-benders pince-nez
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

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

TAKE THE QUIZ