Diagonal

dī-ag′o-nal, adj. through the corners, or from an angle to an opposite angle of a four or many sided figure.— n. a straight line so drawn.— adv. Diag′onally .— Diagonal scale , a scale for laying down small fractions of the unit of measurement, the parallel lines drawn lengthwise on its surface being divided into sections by lines drawn cro wise, and in one end section being intersected by a series of other parallel lines drawn obliquely at equal distances acro them. [Fr.,—L. diagonal is , from Gr. diagōnios — dia , through, and gōnia , a corner.]