Definition of quadrate in English:


Pronunciation /ˈkwädrāt/ /ˈkwɑdreɪt/ /ˈkwädrət/ /ˈkwɑdrət/


  • 1

    (also quadrate bone)
    (in the skull of a bird or reptile) a squarish bone with which the jaw articulates, thought to be homologous with the incus of the middle ear in mammals.

    ‘Most significantly, however, the prootic articulates with the quadrate.’
    • ‘Both the quadrate and the symplectic articulate with the articular of the lower jaw.’
    • ‘Both quadrates are preserved in articulation with the respective mandibles.’
    • ‘The distal end of the pterygoid contacts the squamosal dorsally and the quadrate medially.’
    • ‘Instead, the articular moves laterally relative to the quadrate as the jaw opens.’
  • 2Anatomy

    another term for quadratus


  • Roughly square or rectangular.

    ‘a broad shell with a quadrate outline’
    • ‘The last preserved volution has a quadrate outline.’
    • ‘Among the common shapes are triangular, circular, rhomboidal, quadrate, trapezoidal, and elliptical.’
    • ‘It was a typically quadrate teapot with a square spout and square handle, made during the Qing Dynasty.’
    • ‘As noted earlier, 9 of the 14 quadrate characters used by Luo and Crompton were likewise reversing.’
    • ‘It shows prominent radial and concentric trabeculae that unite in three dimensions to produce a rectangular or quadrate skeletal framework.’


  • 1with object Make square.

    • ‘the materials are there quadrated or formed into rectangular blocks’
    fit in, go together, be consistent, agree, accord, concur, coincide, match, fit, be in agreement, conform, equate, harmonize, fall in, be in tune, correlate, correspond, tally
  • 2Conform or cause to conform.

    ‘he had to make a creed which would quadrate with his immorality’
    • ‘The crown of P3 is slightly larger and more nearly quadrate in occlusal view than P3 of N. serrator.’
    correspond, agree, tally, match up, tie in, be consistent, be in agreement, be compatible, be consonant, be congruous, be in tune, be in harmony, harmonize, coordinate, dovetail


Late Middle English (as an adjective): from Latin quadrat- ‘made square’, from the verb quadrare, from quattuor ‘four’.