Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A square or cube.
  • n. An approximately square or cubic area, space, or object.
  • n. Zoology A bone or cartilaginous structure of the skull, joining the upper and lower jaws in birds, fish, reptiles, and amphibians.
  • adj. Having four sides and four angles; square or rectangular.
  • adj. Zoology Of or being the quadrate bone or cartilage.
  • intransitive v. Archaic To correspond; agree.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Having four equal sides, the opposite sides parallel, and four right angles; square.
  • adj. Produced by multiplying a number by itself; square.
  • adj. Square; even; balanced; equal; exact.
  • adj. Squared; suited; correspondent.
  • n. A plane surface with four equal sides and four right angles; a square; hence, figuratively, anything having the outline of a square.
  • n. An aspect of the heavenly bodies in which they are distant from each other 90°, or the quarter of a circle; quartile.
  • n. The quadrate bone.
  • v. To adjust (a gun) on its carriage.
  • v. To train (a gun) for horizontal firing.
  • v. To square (in various senses).

from the GNU version of the Collaborative International Dictionary of English

  • adj. Having four equal sides, the opposite sides parallel, and four right angles; square.
  • adj. Produced by multiplying a number by itself; square.
  • adj. Square; even; balanced; equal; exact.
  • adj. Squared; suited; correspondent.
  • n. A plane surface with four equal sides and four right angles; a square; hence, figuratively, anything having the outline of a square.
  • n. An aspect of the heavenly bodies in which they are distant from each other 90°, or the quarter of a circle; quartile. See the Note under Aspect, 6.
  • n. The quadrate bone.
  • intransitive v. To square; to agree; to suit; to correspond; -- followed by with.
  • transitive v. To adjust (a gun) on its carriage; also, to train (a gun) for horizontal firing.

from The Century Dictionary and Cyclopedia

  • Having four equal and parallel sides; square; arranged in a square; four-sided.
  • Square by being the product of a number multiplied into itself.
  • Square, as typifying justice according to the Pythagoreans; well-balanced.
  • Fitted; suited; applicable.
  • In heraldry, of square form, or having square corners: thus, a cross quadrate in the center has four rectangular projections in its reëntrant angles. Also quarter-angled.
  • The quadratus lumborum, or square muscle of the loins, lying on each side of the lumbar region, between the lower ribs and the pelvis.
  • The square muscle of the chin, which draws down the lower lip: commonly called depressor labii inferioris.
  • The quadratus nictitantis, one of the two muscles (the other being the pyramidal) on the back of the eyeball of birds, etc., subserving the movements of the nictitating membrane, or third eyelid. See third cut under eye.
  • n. A plane figure with four equal sides and four equal angles; a square.
  • n. In astrology, an aspect of two heavenly bodies in which they are distant from each other ninety degrees, or the quarter of a circle; quartile.
  • n. In zoology and anatomy: The os quadratum, or quadrate bone (see I.); the os pedicellatum, or pedicellate bone; the suspensorium, or suspender bone of the mandible, or that one which is in connection with the lower jaw, in vertebrates below mammals.
  • n. Any quadrate muscle.
  • n. In musical notation: Same as natural, ♮: so called because derived from B quadratum (which see, under B).
  • n. Same as breve, 1.
  • To square; adjust; trim, as a gun on its carriage.
  • To divide into four equal parts: quarter.
  • To square; fit; suit; agree: followed by with.
  • n. A quarter; a quadrant.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a cubelike object
  • adj. having four sides and four angles
  • n. a square-shaped object

Etymologies

Middle English quadrat, something square, from Latin quadrātum, from neuter past participle of quadrāre, to make square, from quadrum, square; see kwetwer- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Old French quadrat ("a square"), from Latin quadratus ("square"), past participle of quadrare ("to make four-cornered, square, put in order, intransitive be square"), from quadra ("a square"), later quadrus ("square"), from quattuor ("four"). (Wiktionary)

Examples

  • Its upper border blends with the anterior and posterior ligaments of the elbow, while from its lower border a thin loose membrane passes to be attached to the neck of the radius; a thickened band which extends from the inferior border of the annular ligament below the radial notch to the neck of the radius is known as the quadrate ligament.

    III. Syndesmology. 6e. Radioulnar Articulation

  • The cartilaginous bar from the palato-pterygoid to the otic capsule is called the quadrate, and at the point of junction, at the postero-ventral angle of the palato-pterygoid, articulates with the cartilaginous bar which is destined to form the substratum of the lower jaw -- Meckel's cartilage (M.c. in Figure 8, I.).

    Text Book of Biology, Part 1: Vertebrata

  • He thought he could show that the skeletal structures (lower jaw, "quadrate," and hyoid) of the first two arches were formed in the serous layer, just like true ribs, and like them in close connection with the vertebral skeletal axis.

    Form and Function A Contribution to the History of Animal Morphology

  • Hornbills are also unusual in possessing a unique ligament – the quadratomandibular ligament – that connects the body of the quadrate with the inside surface of the lower jaw.

    Bucorvids: post-Cretaceous maniraptorans on the savannah

  • Further, no man can judge another, because no man knows himself; for we censure others but as they disagree from that humour which we fancy laudable in ourselves, and commend others but for that wherein they seem to quadrate and consent with us.

    Religio Medici

  • I, here are metaphysics surely; but they are all on your side, who advance an abstruse hypothesis, which can never be made intelligible, nor quadrate with any particular instance or illustration.

    An Enquiry into the Principles of Morals

  • Video musicale colorato e variegato, con auto dalle ruote quadrate, diggei e rapimenti alieni.

    No Fat Clips!!! : DJ YODA – Wheels

  • The earliest therapsids show the typical reptilian type of jaw joint, with the articular bone in the jaw firmly attached to the quadrate bone in the skull.

    What a difference a day makes. - The Panda's Thumb

  • So malleus and the incus, or the hammer and the anvil, are actually the quadrate and the articular that used to be in the jaw joint, and now they are hooked up to the stapes here of the ear.

    What a difference a day makes. - The Panda's Thumb

  • … Yet, in spite of these advances, the tritylodonts still retained the reptilian joint between the quadrate bone of the skull and the articular bone of the lower jaw.

    What a difference a day makes. - The Panda's Thumb

Comments

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  • "'...autopsy showed an enlarged quadrate lobe studded with yellow nodules the size of a pea. He calls it Botany Bay liver, and it is this... that I fear our patient may have caught.'"
    --O'Brian, The Truelove, 28

    March 10, 2008