rationoun [ C ]
uk/ˈreɪ.ʃi.əʊ/us/ˈreɪ.ʃi.oʊ/plural ratiosC1 the relationship between two groups or amounts that expresses how much bigger one is than the other:
The ratio of men to women at the conference was ten to one/10:1.
The school is trying to improve its pupil-teacher ratio (= the number of teachers compared with the number of students).
More examples
- Compute the ratio of the object's height to its weight.
- What is the car's power to weight ratio?
- The staff to student ratio has increased dramatically in the last five years.
- The efficiency of a machine is the ratio between the energy it supplies and the energy put into it.
- Pi is the ratio of a circle's circumference to its diameter.
Thesaurus: synonyms and related words
Statistics
- actuarial
- actuary
- entropy
- even
- index
- interquartile range
- mean
- median
- odds
- pollster
- stat
- statistic
- statistical
- statistician
- stochastic
- variate
- vital statistics
You can also find related words, phrases, and synonyms in the topics:
Numerical relationships