RATIO • DICTIONARY ONE.COM • Definition of Ratio

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/rˈeɪʃiˌoʊ/ Listen

noun

Ratio n.

(Math.) 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 3/6 or ½; of a to b by a/b; or (less commonly) the second term is made the dividend; as, a:b = b/a. Note: Some writers consider ratio as the quotient itself, making ratio equivalent to a number. The term ratio is also sometimes applied to the difference of two quantities as well as to their quotient, in which case the former is called arithmetical ratio, the latter, geometrical ratio. The name ratio is sometimes given to the rule of three in arithmetic. See under Rule.

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

Compound ratio, Duplicate ratio, Inverse ratio, etc. See under Compound, Duplicate, etc.

Ratio of a geometrical progression, the constant quantity by which each term is multiplied to produce the succeeding one.

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Etymology of 'Ratio'

Collaborative International Dictionary of English 0.48

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"Ratio" Quotes from Famous Books

... times as many warriors. It was the rule of Deerfoot to avoid coming in contact with these wanderers, so long as he could do so without rousing their suspicion by his actions. While in a general way the strangers could be counted upon as friendly, they contained a ratio of lawless if not desperate characters, who were liable to be tempted by the hope of plunder. Whirlwind was quite sure to attract envious eyes. Moreover, the party was now in a region which was visited, more or less, by trappers and hunters in the ...

— Deerfoot in The Mountains • Edward S. Ellis

... are so numerous at the Horton Plains, the sport at length becomes monotonous from the very large proportion of the does. The usual ratio in which they were killed was one buck to eight does. I cannot at all account for this small proportion of bucks in this particular spot. At Newera Ellia they are as two or three compared with the does. The following extract of deaths, ...

— The Rifle and The Hound in Ceylon • Samuel White Baker

... exceed the mean in the ratio of 2 or 3 to 1, as shown in fig. 4, representing graphically the result of Sir Andrew Noble's experiments with a 6-in. gun, capable of being lengthened to 100 calibres or 50 ft. (Proc. R.S., ...

— Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 - "Baconthorpe" to "Bankruptcy" • Various

... to change of place and pursuit as the means of improving his fortunes. This at last, as has been seen, led him off to the West in the ardent hope of becoming in time a wealthy farmer. In an inverse ratio to the hopeful elevation of spirits with which Parker set out upon his journey was the sorrowful depression experienced by his wife. But Rachel kept meekly and patiently her feelings to herself. It was her duty, she felt, to go with her husband. She had united her fortunes with ...

— Lizzy Glenn - or, The Trials of a Seamstress • T. S. Arthur

... theory and use of the stops and on the F-notation may be of service. The speed of a photographic lens depends on the ratio of the effective aperture to the focal length. Thus any two lenses used at apertures of F/8, that is at apertures having diameters one-eighth of their respective focal lengths, should be of the same speed, though both lenses and apertures may be very different. ...

— How to Observe in Archaeology • Various

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