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## ratio

ratio: The ratio of two quantities expressed in terms of the same unit is the fraction that has the first quantity as numerator and the second as denominator. For example, if in a group of 100 people 5 die, the ratio of deaths to the total number in the group is 5/100=1/20=.05. Ratios are indicated also by writing the two values with a colon between them, e.g., the ratio of 4 to 8 can be expressed by 4:8 as well as by 4/8.

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"ratio." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 13 Dec. 2017 <http://www.encyclopedia.com>.

"ratio." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (December 13, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/ratio

"ratio." The Columbia Encyclopedia, 6th ed.. . Retrieved December 13, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/ratio

## ratio

ra·tio / ˈrāshō; ˈrāshēˌō/ • n. (pl. -tios) the quantitative relation between two amounts showing the number of times one value contains or is contained within the other: the ratio of men's jobs to women's is 8 to 1. ∎  the relative value of silver and gold in a bimetallic system of currency.

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"ratio." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 13 Dec. 2017 <http://www.encyclopedia.com>.

"ratio." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (December 13, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/ratio-0

"ratio." The Oxford Pocket Dictionary of Current English. . Retrieved December 13, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/ratio-0

## ratio

ratio Number relating two numbers or two quantities of the same kind, such as two prices or two lengths, that indicates their relative magnitude. Ratios, as of the numbers 3 and 4, can be written as a fraction 3/4, or with a colon (3:4).

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"ratio." World Encyclopedia. . Encyclopedia.com. 13 Dec. 2017 <http://www.encyclopedia.com>.

"ratio." World Encyclopedia. . Encyclopedia.com. (December 13, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/ratio

"ratio." World Encyclopedia. . Retrieved December 13, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/ratio

## ratio

ratio In remote sensing, the digital number value of one band of a multispectral image divided by the digital number value of another band. The ratio allows analysis of relative differences between channels.

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"ratio." A Dictionary of Earth Sciences. . Encyclopedia.com. 13 Dec. 2017 <http://www.encyclopedia.com>.

"ratio." A Dictionary of Earth Sciences. . Encyclopedia.com. (December 13, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/ratio

"ratio." A Dictionary of Earth Sciences. . Retrieved December 13, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/ratio

## ratio

ratio relation of one quantity to another XVII; †ration XVIII. — L. ratiō; see REASON.

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"ratio." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 13 Dec. 2017 <http://www.encyclopedia.com>.

"ratio." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (December 13, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/ratio-1

"ratio." The Concise Oxford Dictionary of English Etymology. . Retrieved December 13, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/ratio-1

## ratio

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