# Ratio definitions

Relation in degree or number between two similar things.

noun

A fixed relation in degree, number, etc. between two similar things; proportion.

A *ratio* of two boys to three girls.

noun

The relative value of silver and gold in a currency system that is bimetallic.

noun

A relationship between two quantities, normally expressed as the quotient of one divided by the other; for example, the ratio of 7 to 4 can be written 7:4 or 7/4. A ratio can often also be expressed as a decimal or percentage.

noun

The relative value of gold and silver in a currency system based on both.

noun

The quotient of one quantity divided by another of the same kind, usually expressed as a fraction.

noun

The definition of a ratio is the relationship between two things.

An example of a ratio is four chocolates for every three completed homework assignments written as 4:3.

noun

A relationship between two quantities, normally expressed as the quotient of one divided by the other. For example, if a box contains six red marbles and four blue marbles, the ratio of red marbles to blue marbles is 6 to 4, also written 6:4. A ratio can also be expressed as a decimal or percentage.

A number representing a comparison between two things.

noun

(arithmetic) The relative magnitudes of two quantities (usually expressed as a quotient).

noun

(law) Short for ratio decidendi.

noun

### Origin of ratio

Latin

*ratiō**calculation**from**ratus**past participle of**rērī**to reckon, consider*ar- in Indo-European roots