(economics, finance) A measure of a bank's creditworthiness, equal to ratio of the bank's nonperforming assets (nonperforming loans plus other real estate owned) to the sum of its tangible equity capital plus loan-loss reserves.

(chemistry, pharmacology, biology) A ratio expressing the difference in pharmacologic activity between the two enantiomers of a drug.

Alternative spelling of eudysmic ratio

(technology) ratio of the luminance of white to that of black of a display. A higher value means a higher contrast of white and black.

For a pixelated source, the ratio of the average distance between adjacent pixel sources to the average width of the pixel sources.

(geometry) A special number associated with an ordered quadruple of collinear points, particularly points on a projective line, and preserved by the fractional linear transformations.

(statistics) A variable with the features of interval variable and, additionally, whose any two values have meaningful ratio, making the operations of multiplication and division meaningful.

(signal processing) The ratio of maximum permitted frequency deviation, σₘₐₓ to the maximum permitted modulating frequency, fiₘₐₓ.

The ratio of an object's longest dimension to its next-longest dimension. / The ratio of width to height in a flat surface or 2-dimensional abstract construction, such as an image, character, or pixel.

Of a material in tension or compression, the ratio of the strain in the direction of the applied load to the strain normal to the load. Abbreviated ν.