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A book containing references, alphabetically arranged, to the contents of a series or collection of documents or volumes; or a section (normally at the end) of a single volume or set of volumes containing such references to its contents.

Statistical indexes are also used to track or measure changes in the economy (for example, the Consumer Price Index) and movement in stock markets (for example, Standard & Poor's Index). Such indexes are usually keyed to a base year, month, or other period of comparison.

In mortgage financing, the term is used to determine adjustable-rate mortgage (ARM) interest rates after the discount period ends. Common indexes for ARMs are one-year Treasury Securities and the national average cost of funds to savings and loan associations.

West's Encyclopedia of American Law, edition 2. Copyright 2008 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
The a/A ratio, A-a[O.sub.2], and respiratory index can be used to assess pulmonary gas exchange.
Ppeak, peak inspiratory pressure; Cldyn, dynamic lung compliance; OI, oxygen index; RI, respiratory index; CV group, conventional mechanical ventilation with 12mL/kg tidal volume ([V.sub.T]) and 0 cm [H.sub.2]O positive end-expiratory pressure (PEEP); PV group, protective lung ventilation with 6 mL/kg [V.sub.T] and 10 cm [H.sub.2]O PEEP.
He experienced 117 obstructive apneas and 28 hypopneas, and his combined respiratory index was 24 events per hour.

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