Definition of ratio
ratios
1a : the indicated quotient of two mathematical expressionsb : the relationship in quantity, amount, or size between two or more things : proportion
2 : the expression of the relative values of gold and silver as determined by a country's currency laws
Examples of ratio in a sentence
What is the lengthtowidth ratio?
the ratio of students to teachers in the school is nine to one
Origin and Etymology of ratio
Latin, computation, reason — more at reason
First Known Use: 1660
Other Mathematics and Statistics Terms
RATIO Defined for English Language Learners
ratio
playDefinition of ratio for English Language Learners

: the relationship that exists between the size, number, or amount of two things and that is often represented by two numbers
RATIO Defined for Kids
ratio
playDefinition of ratio for Students
ratios
: the relationship in number or quantity between two or more things the ratio of teachers to students
Medical Dictionary
Learn More about ratio

See words that rhyme with ratio Thesaurus: All synonyms and antonyms for ratio Spanish Central: Translation of ratio Nglish: Translation of ratio for Spanish speakers Britannica English: Translation of ratio for Arabic speakers Britannica.com: Encyclopedia article about ratio
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