Diagonal

[Gr. diagonios -dia, and gõnia, a corner, an angle.] ( Geom.) Extending from one angle to another of a quadrilateral or multilateral figure, and dividing it into two parts; being in an angular direction. -n. ( Geom .) A straight line drawn from any angle to an opposite one, in a rectilineal figure. A straight line drawn between two adjacent angles would obviously coincide with the boundary-line; consequently no triangle can have a D. A quadrilateral figure has two D .; a pentagon, fire ; a hexagon, nine ; . In order to calculate the number of po ible D. in a given figure, the plan is, to take 3 from the number of sides, multiply the remainder by the number of sides, and take half the product. Thus, in the case of a pentagon, 3×6 2X5 IMG:content-0599.png:[blocks in formation] ( Arch .) A D. rib is a projecting band of stone or timber pa ing diagonally from one angle of a vaulted ceiling acro the centre to the opposite angle. resembling Bronzite , found in crystals or foliated ma es, Diag'onous, a . ( Bot .) Po e ing four corners. of a bra -yellow to a greenish-gray color, in the gnei mountain of Guadanama, Spain. Sp . gr . 3.054. Diaco'dium, n. [Lat., from Gr., and kodia , a poppy- head.] ( Med .) A preparation made of the heads of poppies. Diac'onal, a. [Fr., from Lat. diaconus . See DEACON.] Pertaining to a deacon; as, the diaconal office. Diac'onate, n. [Fr. diaconat .] The office of a deacon. Diacoustic, a . [From Gr. dia , and akonein , to hear.] Pertaining to the science or doctrine of sounds. (Geom.) A figure, draught, or scheme, delineated for the purpose of demonstrating the properties of any figure, as a square, triangle, circle, . ( Mus .) In ancient music, the table of sounds. Indicator diagram . ( Steam - Engineering .) See INDI CATOR.