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
The debt-to-equity ratio of 13.4% remains well below the S&P 500 average of 19.4%, indicating conservative financial management and reduced leverage risk.
—
Trefis Team, Forbes.com, 21 July 2025
The club touted its personnel expense-to-revenue ratio of 43%, a four percentage point improvement versus the previous season.
—Kurt Badenhausen, Sportico.com, 21 July 2025
The deal’s completion is a win for arbitrage traders who were betting on the spread between Hess’s share price and the exchange ratio agreed with Chevron.
—Bloomberg News, Boston Herald, 19 July 2025
Compared to the free air and 50/50 ratio, the progeny exposed to the 30/70 ratio showed a much larger reduction in cranial width and height.
—Charlotte Phillipp, People.com, 18 July 2025
See All Example Sentences for ratio
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Trefis Team, Forbes.com, 21 July 2025
The club touted its personnel expense-to-revenue ratio of 43%, a four percentage point improvement versus the previous season.
—Kurt Badenhausen, Sportico.com, 21 July 2025
The deal’s completion is a win for arbitrage traders who were betting on the spread between Hess’s share price and the exchange ratio agreed with Chevron.
—Bloomberg News, Boston Herald, 19 July 2025
Compared to the free air and 50/50 ratio, the progeny exposed to the 30/70 ratio showed a much larger reduction in cranial width and height.
—Charlotte Phillipp, People.com, 18 July 2025
See All Example Sentences for ratio
Cite this Entry
“Ratio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ratio. Accessed 29 Jul. 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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