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
Lenders calculate this ratio by dividing the property’s net operating income by its total debt obligations.
—
Ryan Barone, Forbes.com, 4 Apr. 2025
The researchers encouraged them to exercise for at least 300 minutes per week and to get their calories in a ratio of 55 percent carbohydrates, 15 percent protein, and 30 percent fat.
—Tom Gavin, EverydayHealth.com, 3 Apr. 2025
Its total exports to the U.S. are $438 billion, a surplus ratio of 68 percent.
—Lee Habeeb, MSNBC Newsweek, 3 Apr. 2025
The tariffs levied are either 10 percent or half of that trade deficit ratio, whichever is higher.
—The Editors, National Review, 3 Apr. 2025
See All Example Sentences for ratio
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Ryan Barone, Forbes.com, 4 Apr. 2025
The researchers encouraged them to exercise for at least 300 minutes per week and to get their calories in a ratio of 55 percent carbohydrates, 15 percent protein, and 30 percent fat.
—Tom Gavin, EverydayHealth.com, 3 Apr. 2025
Its total exports to the U.S. are $438 billion, a surplus ratio of 68 percent.
—Lee Habeeb, MSNBC Newsweek, 3 Apr. 2025
The tariffs levied are either 10 percent or half of that trade deficit ratio, whichever is higher.
—The Editors, National Review, 3 Apr. 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 16 Apr. 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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