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 3/6 or 1/2; of a to b by a/b; or (less commonly) the second term is made the dividend; as, a:b = b/a.
noun.
Hence, fixed relation of number, quantity, or degree; rate; proportion.
noun.
See under Compound, Duplicate, etc.
noun.
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noun.
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noun.
the constant quantity by which each term is multiplied to produce the succeeding one.