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# Ratio

[rey-shoh, -shee-oh] /ˈreɪ ʃoʊ, -ʃiˌoʊ/

noun, plural ratios.
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.
2.
proportional relation; rate:
the ratio between acceptances and rejections.
3.
Finance. the relative value of gold and silver in a bimetallic currency system.
[oo l-ti-mah rah-tee-oh rey-goo m; English uhl-tuh-muh rey-shee-oh ree-guh m] /ˈʊl tɪˌmɑ ˈrɑ tiˌoʊ ˈreɪ gʊm; English ˈʌl tə mə ˈreɪ ʃiˌoʊ ˈri gəm/
Latin.
1.
the final argument of kings (a resort to arms): motto engraved on the cannon of Louis XIV.
/ˈreɪʃɪˌəʊ/
noun (pl) -tios
1.
a measure of the relative size of two classes expressible as a proportion: the ratio of boys to girls is 2 to 1
2.
(maths) a quotient of two numbers or quantities See also proportion (sense 6)
n.

1630s, “reason, rationale,” from Latin ratio “reckoning, numbering, calculation; business affair, procedure,” also “reason, reasoning, judgment, understanding,” from rat-, past participle stem of reri “to reckon, calculate,” also “think” (see reason (n.)). Mathematical sense “relationship between two numbers” is attested from 1650s.

ratio ra·tio (rā’shō, rā’shē-ō’)
n. pl. ra·tios

ratio
(rā’shō, rā’shē-ō’)
A relationship between two quantities, normally expressed as the quotient of one divided by the other. For example, if a box contains six red marbles and four blue marbles, the ratio of red marbles to blue marbles is 6 to 4, also written 6:4. A ratio can also be expressed as a decimal or percentage.
ratio [(ray-shee-oh, ray-shoh)]

An expression of the relative size of two numbers by showing one divided by the other.

Tagged:

• Ratiocinate

[rash-ee-os-uh-neyt, -oh-suh-, rat-ee-] /ˌræʃ iˈɒs əˌneɪt, -ˈoʊ sə-, ˌræt i-/ verb (used without object), ratiocinated, ratiocinating. 1. to reason; carry on a process of reasoning. /ˌrætɪˈɒsɪˌneɪt/ verb 1. (intransitive) to think or argue logically and methodically; reason v. “to reason,” 1640s, from Latin ratiocinatus, past participle of ratiocinare (see ratiocination). Related: Ratiocinant.

• Ratiocination

[rash-ee-os-uh-ney-shuh n, -oh-suh-, rat-ee-] /ˌræʃ iˌɒs əˈneɪ ʃən, -ˌoʊ sə-, ˌræt i-/ noun 1. the process of logical reasoning. n. “process of reasoning,” 1520s, from Latin ratiocinationem (nominative ratiocinatio) “a reasoning, calm reasoning,” from past participle stem of ratiocinare “to calculate, deliberate,” from ratio (see ratio) + -cinari, which probably is related to conari “to […]

• Ratiocinative

[rash-ee-os-uh-ney-shuh n, -oh-suh-, rat-ee-] /ˌræʃ iˌɒs əˈneɪ ʃən, -ˌoʊ sə-, ˌræt i-/ noun 1. the process of logical reasoning. n. “process of reasoning,” 1520s, from Latin ratiocinationem (nominative ratiocinatio) “a reasoning, calm reasoning,” from past participle stem of ratiocinare “to calculate, deliberate,” from ratio (see ratio) + -cinari, which probably is related to conari “to […]

• Ratiometer

[rey-shee-om-i-ter] /ˌreɪ ʃiˈɒm ɪ tər/ noun 1. (in three-color photography) a device for determining the exposure factors of the filters to be used.

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