(a.) Having four sides, and consequently four angles; quadrangular.
(n.) A plane figure having four sides, and consequently four angles; a quadrangular figure; any figure formed by four lines.
(n.) An area defended by four fortresses supporting each other; as, the Venetian quadrilateral, comprising Mantua, Peschiera, Verona, and Legnano.
Example Sentences:
(1) In 33 patients an external quadrilateral frame system was applied primarily, and in the remaining nine within 1-2 weeks.
(2) Attempts have been made to avoid the fallacies with the introduction of quadrilateral and Wits analyses.
(3) The purpose of this case report is to 1) briefly describe the traditional above-knee (AK) quadrilateral socket, 2) describe the contoured adducted trochanteric-controlled alignment method (CAT-CAM) socket, 3) describe the management of a patient with a temporary CAT-CAM prosthesis, and 4) explain how the CAT-CAM prosthesis approach has resolved a medically complex clinical problem.
(4) Moreover, the impression has been created that they are not governed by the basic biomechanical rules identified by Radcliffe as affecting the quadrilateral socket.
(5) Axisymmetric 8-node quadrilateral element for arbitrary loading was used for the analysis.
(6) Successful ligation experiments include the oligomerization of individual three-arm and four-arm junctions, the assembly of a quadrilateral from four junctions with different sticky ends, and the recent construction of a molecule with the connectivity of a cube.
(7) This paper applies the more abstract and inclusive concept of "embodiment" from the phenomenological movement in philosophy to the life history of a 35-year-old American woman born with quadrilateral limb deficiencies.
(8) On Tuesday the finance ministers of Scotland, Wales and Northern Ireland branded quadrilateral Brexit talks with the chief secretary to the Treasury, David Gauke, as disappointing, accusing him of failing to provide enough information on how exiting the EU would affect their nations.
(9) Craniofacial structure was described with DiPaolo's quadrilateral measures.
(10) Analysis showed that a pair of parallel sides of a quadrilateral were viewed as parallel to the viewer's forehead when the sides were horizontal in the image plane and were seen as slanting in depth if they were slanted in the image plane.
(11) Septal deformity is of two kinds, which may occur independently, or together: 1) anterior cartilage deformity of the quadrilateral septal cartilage, caused by direct trauma or pressure at any age; and 2) combined septal deformity involving all the septal components, caused by compression across the maxilla from pressures occurring during pregnancy or parturition.
(12) In this patient, entrapment of the axillary nerve by fibrous bands in the quadrilateral space caused shoulder pain with paresthesias in the upper extremity.
(13) An axisymmetric element of quadrilateral cross-section is developed and applied to the mechanical test problem of a cylindrical specimen of soft tissue in unconfined compression.
(14) The primary treatment was conservative with cast immobilization in 86 patients, external fixation by a quadrilateral system in 14, and open reduction and internal fixation in four.
(15) The two danger zones are the zygomatic arch which is crossed by the frontal nerve trunk and a quadrilateral area between the hairline and the tail of the eyebrow and a vertical line 1.5 cm lateral to the lateral canthus of the eye.
(16) In healthy children younger than 5 years of age, the thymus had a quadrilateral shape and biconvex lateral contours.
(17) Five, rehabilitated, unilateral above-knee amputees (average age, 34.4 years) using quadrilateral sockets were converted to Contoured Adducted Trochanteric-Controlled Alignment Method (CAT-CAM) sockets to determine the effect on ambulatory function.
(18) The quadrilateral did not appear to be rectangular when viewed in peripheral vision even though the rectangular viewing condition was used.
(19) We consider the CAT-CAM prosthesis an improvement over the quadrilateral socket for increasing ambulation independence in the individual with AK amputation and other medical complications.
(20) He also criticised the UK for not showing more imagination Updated at 11.36am GMT 11.12am GMT The leaders of Sweden , Finland , the Netherlands and Denmark have been holding talks ( a quadrilateral-meeting? )
Tetragonal
Definition:
(a.) Of or pertaining to a tetragon; having four angles or sides; thus, the square, the parallelogram, the rhombus, and the trapezium are tetragonal fingers.
(a.) Having four prominent longitudinal angles.
(a.) Designating, or belonging to, a certain system of crystallization; dimetric. See Tetragonal system, under Crystallization.
Example Sentences:
(1) The crystals are tetragonal, with unit cell dimensions a = 48.9 A and c = 82.0 A, space group P 41 21 2 or P 43212.
(2) The morphological unit of the regular array appeared to consist of four spherical subunits, each about 2 nm in diameter, which were arranged in a tetragonal pattern about 4.5 by 7.0 nm in dimension.
(3) Two different tetragonal crystal forms have been characterized, both diffracting to about 6 A using synchrotron radiation.
(4) The outer structured layer was a linear array of particles overlying an inner tetragonal array of larger subunits.
(5) An activity assay of redissolved tetragonal form crystals indicates that the uncleaved, functional serpin has been crystallized.
(6) The A ring of the steroid in the tetragonal crystal was found to be disordered, and exists in both a normal and inverted conformation.
(7) One was in a hexagonal array, and the other was in a tetragonal array.
(8) The crystals are tetragonal rods with unit cell dimensions a = 128.6 A, c = 92.5 A.
(9) A hydrated cobalt ion is found to coordinate to two N7 atoms of adjacent guanines, forcing these two guanines to destack with a large dihedral angle (32 degrees), in the dimer of the tetragonal form.
(10) These tubules are clearly distinguishable by their shape and fine structure from the periodic structure of a P. rhodos cell wall layer, which exhibits a tetragonal pattern, and also from polyheads and polysheaths of defective bacteriophages.
(11) The structure crystallizes in the tetragonal space group P41 with a = 8.225 (5) and c = 28.42 (1) A.
(12) This truncated S-protein was exported via the periplasm to the cell surface, but could not self-assemble into a tetragonal array or be anchored to the cell surface.
(13) Bacillus sphaericus strain P-1 has previously been shown to have a tetragonally arrayed (T layer) protein which forms the outer layer of the cell wall.
(14) Its three-dimensional structure from two different crystal forms (tetragonal and trigonal) has been determined by X-ray diffraction analysis at 1 A resolution.
(15) Both crystal forms are tetragonal, the space group for form I is P4(1)22 (or P4(3)22), and that for form II is P4(2)22.
(16) Density variations suggest an arrangement of subunits, either tetragonal or trigonal, viewed from a variety of angles about the DNA axis.
(17) The binuclear copper site is characterized as two tetragonal Cu(II) atoms bridged by both an endogenous protein ligand and the exogenous ligand (i.e., peroxide), with the lack of an electron paramagnetic resonance signal being the result of antiferromagnetic exchange via the endogenous bridge.
(18) The crystals are tetragonal, show the symmetry of space group P4(1) or its enantiomer, have lattice constants of a = 58.46 (1) and c = 77.02 (3) A, and scatter to at least 2 A resolution.
(19) These elevations were distributed according to a tetragonal pattern with a periodicity of 850 A.
(20) Crystals are tetragonal, with space group P42(1)2, a = b = 171 A, c = 150 A in the absence of ATP; and P422, a = b = 101 A, c = 114.4 A in the presence of ATP.