率

gross margin ratio

Computing

activity ratio

Mathematics

moment

Medicine

prevalence (rate)

rate of change

Physics

power

modulus of elasticity

labour rate; pay rate; wage rate; income rate

batting average

Computing

availability ratio

Physics

emissivity

viscosity (coefficient); dynamic viscosity (coefficient)

following (a precedent, former example, etc.)

ratio of the margin of loss of an electoral candidate in a single-constituent district (used to break ties when determining the representative of a proportionally represented district)

oblateness

proportion of forested land; proportion of land which is forested

case fatality rate

gross profit margin

distortion factor

ratio of wholesale price to retail price

Finance

deviation rate; rate of divergence

dust content

degree of milling (of rice)

expansion rate; growth rate