ratio
noun
ra·tio
ˈrā-shē-ˌō 
-(ˌ)shō
plural ratios
1
a
: the indicated quotient of two mathematical expressions
b
: 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 length-to-width ratio?
the ratio of students to teachers in the school is nine to one
Recent Examples on the Web
At 34 inches, this is a fairly large monitor with a 21:9 ratio and impeccable 1440p resolution.
—
Gabriela Vatu, PCMAG, 15 Feb. 2025
The result of that ratio is an extremely low probability.
—Paul Smaglik, Discover Magazine, 14 Feb. 2025
No one in the film comments that the city’s population has inverted from one Iranian resident out of 200 to a ratio of 200 to one.
—Amy Nicholson, Los Angeles Times, 13 Feb. 2025
The company aims to maintain a balanced debt-to-equity ratio and has a strong credit rating.
—Quartz Intelligence Newsroom, Quartz, 13 Feb. 2025
See all Example Sentences for ratio 
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Gabriela Vatu, PCMAG, 15 Feb. 2025
The result of that ratio is an extremely low probability.
—Paul Smaglik, Discover Magazine, 14 Feb. 2025
No one in the film comments that the city’s population has inverted from one Iranian resident out of 200 to a ratio of 200 to one.
—Amy Nicholson, Los Angeles Times, 13 Feb. 2025
The company aims to maintain a balanced debt-to-equity ratio and has a strong credit rating.
—Quartz Intelligence Newsroom, Quartz, 13 Feb. 2025
See all Example Sentences for ratio
Articles Related to ratio
Dictionary Entries Near ratio
Cite this Entry
“Ratio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ratio. Accessed 19 Feb. 2025.
Copy CitationKids Definition
ratio
noun
ra·tio
ˈrā-shō
-shē-ˌō
plural ratios
1
: the quotient of two numbers or mathematical expressions
the ratio of 6 to 3 may be expressed as 6:3, ⁶⁄₃, and 2
2
: the relationship in quantity, amount, or size between two or more things
women outnumbered men in the ratio of three to one
Medical Definition
ratio
noun
ra·tio
ˈrā-(ˌ)shō, -shē-ˌō
plural ratios
: the relationship in quantity, amount, or size between two or more things see sex ratio
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