ratio
n. countablen. the relationship between two amounts, showing how many times one value contains or is contained within the other. You use it to compare the sizes of two groups or numbers.
n. the quantitative relation between two amounts showing the number of times one value contains or is contained within the other. Often expressed as two numbers separated by a colon.
The ratio of boys to girls in the class is two to one.
The school maintains a low student-to-teacher ratio to ensure every child receives individual attention.
Financial analysts examine the debt-to-equity ratio to determine whether a company is over-leveraged and at risk of insolvency during a market downturn.
Borrowed from Latin ratiō. Doublet of ration and reason.
Commonly follows the pattern 'the ratio of A to B'.
the ratio between boys and girlsthe ratio of boys to girlsWhile 'between' is sometimes used, 'of... to...' is the standard mathematical and academic construction.