quadrato-
(kwəˈdreɪtəʊ)
mod. comb. form of L. quadrātus or quadrātum, quadrate a. or n.1; used in some scientific terms.
† 1. Math. quadrato-cubic a., of the fifth power or degree. quadrato-quadrat(e, the fourth power. quadrato-quadratic, -quadratical adjs., of the fourth power; biquadratic. Obs.
| 1662 Hobbes Seven Prob. Wks. 1845 VII. 67 There be some numbers called plane..others *quadrato-cubic. 1787 Waring in Phil. Trans. LXXVII. 81 Biquadratic and quadrato-cubic equations. |
| 1684 T. Baker Geometr. Key d. 2 The *quadrato-quadrat of x, x4. 1728 Clarke in Phil. Trans. XXXV. 387 The Cube, or the quadrato-quadrate, or any other Power. |
| 1674 Petty Disc. Dupl. Proportion 45 To have like Vessels..equally strong, the Timber of which they consist must be *Quadrato-quadratic. 1677 Baker in Rigaud Corr. Sci. Men (1841) II. 18 The geometrical constructions of all cubic, and quadrato-quadratic equations. |
| 1668 Barrow ibid. 63 When the equations are *quadrato-quadratical. |
2. Zool. Connected with or pertaining to the quadrate together with some other bone, as
quaˌdrato-ˈjugal a. and n. (see
quot. 1878),
-manˈdibular,
-(meta)ˈpterygoid,
-squaˈmosal adjs. (see the second element).
| 1870 Rolleston Anim. Life 18 The quadratojugal rod. 1878 Bell Gegenbaur's Comp. Anat. 462 In Birds the quadrato-jugal is a slender piece of bone, which arises from the side of the mandibular joint of the quadrate. 1888 Rolleston & Jackson Anim. Life 338 The quadrate or in Teleostei..the quadrato-metapterygoid. |
3. Cryst. ˌquadratoctaˈhedron, an eight-sided crystal of square section through the secondary axes.
| 1884 Bower & Scott De Bary's Phaner. 137 The fundamental form of the crystals belonging to the quadratic system is the quadratoctahedron. |