(Definition of ratio noun from the Cambridge Business English Dictionary
© Cambridge University Press)

Focus on the pronunciation of ratio
You are looking at an entry to do with Numerical relationships, but you might be interested in these topics from the **Mathematics & arithmetic** topic area:

- Addition, subtraction, multiplication & division
- Averages
- Calculations & calculating
- Fractions
- Geometrical & mathematical instruments
- Geometrical shapes
- Geometry: bends, loops & curves
- Geometry: describing angles, lines & orientations
- Geometry: parts of geometrical shapes
- Geometry: properties of circles & curves
- Mathematical symbols
- Numbering & counting
- Numbers generally
- Numbers: cardinal, including nought & zero
- Numbers: groups of things according to number
- Numbers: ordinal
- Numbers: single, double & multiple
- Statistics
- Tables, graphs & diagrams
- Terms for numbers

Read our blog about how the English language behaves.

Find words and meanings that have just started to be used in English, and let us know what you think of them.