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 bank expects the PBOC to cut the seven-day reverse repo rate and loan prime rate by 10-basis points in the fourth quarter, along with a a 50-basis-point reduction in the reserve requirement ratio, which sets out how much cash banks must hold in reserve.
—
Anniek Bao, CNBC, 22 Sep. 2025
Vásquez has a 22-to-2 strikeout-to-walk ratio in 22 innings since the start of August.
—Jeff Sanders, San Diego Union-Tribune, 22 Sep. 2025
Quarterback Maverick McIvor has passed for over 900 yards with a strong touchdown‑to‑interception ratio.
—Ben Verbrugge, MSNBC Newsweek, 20 Sep. 2025
Syrup to carbonated water ratios are boosted to account for melting ice.
—Deirdre Bardolf, FOXNews.com, 20 Sep. 2025
See All Example Sentences for ratio
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Anniek Bao, CNBC, 22 Sep. 2025
Vásquez has a 22-to-2 strikeout-to-walk ratio in 22 innings since the start of August.
—Jeff Sanders, San Diego Union-Tribune, 22 Sep. 2025
Quarterback Maverick McIvor has passed for over 900 yards with a strong touchdown‑to‑interception ratio.
—Ben Verbrugge, MSNBC Newsweek, 20 Sep. 2025
Syrup to carbonated water ratios are boosted to account for melting ice.
—Deirdre Bardolf, FOXNews.com, 20 Sep. 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 24 Sep. 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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