trapezoid

trap·e·zoid

noun \ˈtra-pə-ˌzȯid\

Definition of TRAPEZOID

1

a British : trapezium 1a

b : a quadrilateral having only two sides parallel

2

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

— trap·e·zoi·dal \ˌtra-pə-ˈzȯi-d^əl\ adjective

Illustration of TRAPEZOID

Origin of TRAPEZOID

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

First Known Use: circa 1706

Rhymes with TRAPEZOID

adenoid, alkaloid, amoeboid, aneroid, anthropoid, arachnoid, asteroid, Australoid, carcinoid, Caucasoid, celluloid, crystalloid, echinoid, ellipsoid, embryoid, eunuchoid, flavonoid, helicoid, hemorrhoid, hominoid, humanoid, hysteroid, metalloid, Mongoloid, myeloid, nautiloid, nucleoid, null and void, obovoid, opioid, osteoid, overjoyed, paranoid, planetoid, Polaroid, retinoid, rheumatoid, solenoid, Stalinoid, unalloyed, unemployed

trap·e·zoid

noun \ˈtrap-ə-ˌzȯid\   (Medical Dictionary)

Medical Definition of TRAPEZOID

: 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