quadrangle

[Fr., from Lat. quadrangulum, neut. sing. of quad rang ulus = four-cornered: quad rus square, and angulus an angle; Sp. quadran gulo; Ital. quadrangolo.] I. Ord. Lang.: A square or four-sided court or space surrounded by buildings, as often seen in the buildings of a college, school, . [QUAD (1), s .] II. Geom.: A figure having four angles, and consequently four sides. marine; gō, pot,. IMG:content-0032.png:[blocks in formation] IMG:content-0033.png:[blocks in formation] 2. Music : The sign used originally to raise B rotundum flat, one semitone. Hence arose its gen. eral use for the raising of all flattened notes, as exemplified in its modern form of a natural. 3. Comp . Anat .: The quadrate-bone (q. v.). quadrate-bone, s. Compar. Anat .: A bone by means of which the rami are articulated with the skull in Birds, Rep- tiles, and Fishes (often called the Hypo tympanic bone). quãd'-rāte, v . i. & t . [QUADRATE, a .] *A. In trans.: To square, to fit, to match, to cor- respond, to suit. (Followed by with .) "There is a better explanation at hand, which exactly quadrates with the sense here given."-War burton: Div. Legation, bk. iv., § 6. IMG:content-0034.png:[blocks in formation] IMG:content-0035.png:[blocks in formation] IMG:content-0036.png:[blocks in formation] †quãd-ri-căp-su-lar, a . [Pref. quadri- , and English capsular (q. v.).] Botany: Having four cap- sules. "The quadrature of the circle is a famous problem, which has probably been the subject of more discu ion and research than any other problem within the whole range of mathematical science. The area of the circle being equal to a rectangle described upon the radius and half of the circumference, it follows that the quadrature would be po ible if an algebraic expre ion, with a finite A space of four years. number of terms, could be found for the length of the circumference. Hence, the problem is reduced to finding IMG:content-0037.png:[blocks in formation] algebraic terms for the ratio of the diameter to the cir- cumference. No such expre ion has yet been found, and it is by no means probable that such an expre ion will ever be found. The problem may safely be cla ed with the problems for the geometrical tri-section of an angle, the duplication of the cube, ., all of which are now regarded as beyond the power of exact geometrical con- struct i on."- Davies & Peck : Math . Dictionary. quãd-rel, s. [Low Lat. quadrellus , from Latin quadrus square; quatuor four; Ital. quadrello ; O. Fr. quarrel , carrel ; Fr. carreau .] 1. A square stone, brick, or tile. 2. A kind of artificial stone made of chalky earth dried in the sun. So called from the square shape. 3. A piece of turf or peat cut in a square form. (Prov.) chin, bench; go, gem; thin, this; IMG:content-0038.png:[blocks in formation] The American Dictionary and Cyclopedia quadrifidæ quãd-rif-i-dæ, s. pl. [Latin quadrifid us, from quadrus square, fourfold, and fin do (pa. t. fid i ) = to cleave.] Entom.: A section of Noctuina. Wings generally broad, sometimes very large, hinder ones but little folded, median wing of the latter generally with four branches. European species few. Sections: Variegatæ. Intru e, Limbatæ, and Serpentine. ( Stainton .)