Definitions for Ratioˈreɪ ʃoʊ, -ʃiˌoʊ

This page provides all possible meanings and translations of the word Ratio

Random House Webster's College Dictionary

ra•tioˈreɪ ʃoʊ, -ʃiˌoʊ(n.)(pl.)-tios.

  1. the relation between two similar magnitudes with respect to the number of times the first contains the second:

    the ratio of 5 to 2, written 5:2 or 5/2.

    Category: Math

  2. proportional relation; rate:

    the ratio between acceptances and rejections.

    Category: Math

  3. the relative value of gold and silver when both are used as a country's monetary standard.

    Category: Business

Origin of ratio:

1630–40; < L ratiō reckoning, proportion

Princeton's WordNet

  1. ratio(noun)

    the relative magnitudes of two quantities (usually expressed as a quotient)

  2. proportion, ratio(noun)

    the relation between things (or parts of things) with respect to their comparative quantity, magnitude, or degree

    "an inordinate proportion of the book is given over to quotations"; "a dry martini has a large proportion of gin"

Kernerman English Learner's Dictionary

  1. ratio(noun)ˈreɪ ʃoʊ, -ʃiˌoʊ

    the relationship between two groups, shown as a number

    We spent more on research than them by a ratio of 2 to 1.; the ratio of boys to girls in the class


  1. ratio(Noun)

    A number representing a comparison between two things.

  2. ratio(Noun)

    The relative magnitudes of two quantities (usually expressed as a quotient).

  3. ratio(Noun)

    Short for ratio decidendi.

  4. Origin: From ratio.

Webster Dictionary

  1. Ratio(noun)

    the relation which one quantity or magnitude has to another of the same kind. It is expressed by the quotient of the division of the first by the second; thus, the ratio of 3 to 6 is expressed by / or /; of a to b by a/b; or (less commonly) the second term is made the dividend; as, a:b = b/a

  2. Ratio(noun)

    hence, fixed relation of number, quantity, or degree; rate; proportion; as, the ratio of representation in Congress


  1. Ratio

    In mathematics, a ratio is a relationship between two numbers of the same kind, usually expressed as "a to b" or a:b, sometimes expressed arithmetically as a dimensionless quotient of the two that explicitly indicates how many times the first number contains the second. In layman's terms a ratio represents, for every amount of one thing, how much there is of another thing. For example, supposing one has 8 oranges and 6 lemons in a bowl of fruit, the ratio of oranges to lemons would be 4:3 while the ratio of lemons to oranges would be 3:4. Additionally, the ratio of oranges to the total amount of fruit is 4:7. The 4:7 ratio can be further converted to a fraction of 4/7 to represent how much of the fruit is oranges.

British National Corpus

  1. Spoken Corpus Frequency

    Rank popularity for the word 'Ratio' in Spoken Corpus Frequency: #3413

  2. Written Corpus Frequency

    Rank popularity for the word 'Ratio' in Written Corpus Frequency: #4354

  3. Nouns Frequency

    Rank popularity for the word 'Ratio' in Nouns Frequency: #1195

Translations for Ratio

Kernerman English Multilingual Dictionary


the amount or proportion of one thing compared to another

There is a ratio of two girls to one boy in this class.

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