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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
In the Premier League, only Villa’s Jhon Duran (a goal every 87.4 minutes) and Haaland (107.4 minutes) have a better minutes-per-goal ratio than Isak (108.9).
—Chris Waugh, The Athletic, 23 Dec. 2024
The ratio of private funding to NFS dollars differs for each center.
—Frederick Dreier, Outside Online, 23 Dec. 2024
That ratio has shifted since the Dobbs decision – by July 2024, more callers were at least 20 weeks pregnant.
—Cait Kelley, Baltimore Sun, 21 Dec. 2024
The integration of aerial imagery, predictive analytics and computer vision drives better efficiency and improves combined ratios in today’s challenging environment.
2024 simply reinforces the need for this shift across the industry.
—David Tobias, Forbes, 20 Dec. 2024
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Word History
Etymology
Latin, computation, reason — more at reason entry 1
First Known Use
1660, in the meaning defined at sense 1a
Phrases Containing 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 7 Jan. 2025.
Kids 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
More from Merriam-Webster on 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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