n.the relative magnitudes of two quantities (usually expressed as a quotient)

Extraordinary Sex Ratios
Sex Ratios and Reversals: The Theory of Sex Allocation
Financial Ratios As Predictors Of Failure - Discussion
Financial Ratios and the Probabilistic Prediction of Bankruptcy
THE META‐ANALYSIS OF RESPONSE RATIOS IN EXPERIMENTAL ECOLOGY
Large On-Off Ratios and Negative Differential Resistance in a Molecular Electronic Device.
Extraordinary sex ratios. A sex-ratio theory for sex linkage and inbreeding has new implications in cytogenetics and entomology.
Novel carbon-doped TiO2 nanotube arrays with high aspect ratios for efficient solar water splitting
PAHs in the Fraser River basin: a critical appraisal of PAH ratios as indicators of PAH source and composition
Determination of molecular weights and frictional ratios of proteins in impure systems by use of gel filtration and density gradient...