ra·​tio | / ˈrā-(ˌ)shō How , -shē-ˌō /

Definition of ratio

1a : 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 countrys 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 Economists now see the chance of more cuts to the reserve requirement ratio for banks in coming months after a surprise reduction in July. BostonGlobe.com, 15 Aug. 2021 At 6-foot-7, 350ish pounds, the Alabama offensive tackle’s athleticism to size ratio is, well, notable. Mike Rodak | Mrodak@al.com, al, 10 Aug. 2021 The dough to hotdog ratio was just off — too much dough and a fairly thin hotdog. Daniela Franco Brown, The Indianapolis Star, 7 Aug. 2021 The buildings parking space to unit ratio is typical of affordable apartment developments throughout Milwaukee, said Brandon Rule, Rule Enterprises president. Tom Daykin, Milwaukee Journal Sentinel, 21 July 2021 At the very least, commit to a diversification ratio thats realistic. Ali Jamal, Forbes, 7 July 2021 Fangtooth -- According to the WHOI the fangtooth has the highest tooth to body ratio of any fish in the ocean. Thomas Page, CNN, 2 July 2021 The prioritization of male children led to a significant male-to-female gap in China by 2020, with over 105 males for every 100 females, compared to the global ratio of 101 males for every 100 females. Caitlin Mcfall, Fox News, 1 July 2021 When replacing butter or oil with avocado puree, the ratio is 1:1, just like applesauce. Robin Miller, The Arizona Republic, 13 Aug. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word ratio. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ratio

1660, in the meaning defined at sense 1a

History and Etymology for ratio

Latin, computation, reason — more at reason entry 1

Learn More About ratio

Statistics for ratio

Cite this Entry

“Ratio.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ratio. Accessed 1 Sep. 2021.

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More Definitions for ratio

ra·​tio | / ˈrā-shō How , -shē-ˌō /

Kids Definition of ratio

: the relationship in number or quantity between two or more things the ratio of teachers to students

ra·​tio | / ˈrā-(ˌ)shō, -shē-ˌō How /

Medical Definition of ratio

: the relationship in quantity, amount, or size between two or more things — see sex ratio

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