Index
01
the finger adjacent to the thumb, commonly used for pointing
例
She wore a ring on her index finger.
02
指数, インデックス
a system that provides the amount of prices, costs, etc. so that one can compare them with their previous value
例
The Consumer Price Index ( CPI ) is used to measure inflation by comparing current prices to those of a base year.
消費者物価指数（CPI）は、現在の価格を基準年の価格と比較することでインフレを測定するために使用されます。
03
an alphabetical listing of topics, names, or terms with references to their locations, typically in a book or document
例
The book includes an index for quick reference.
04
a value or ratio derived from observed data that reveals relative changes over time or between items
例
The industrial production index rose last month.
05
a notation indicating the number of times a quantity is multiplied by itself
例
In the equation x², 2 is the index.
to index
01
索引する, カタログ化する
to systematically organize and list items for easy reference or retrieval
Transitive: to index records or documents
例
They indexed the books in the library according to the Dewey Decimal System.
彼らはデューイ十進分類法に従って図書館の本を索引付けしました。
02
インデックス化する, 指数に合わせて調整する
to adjust wages, prices, or other economic variables according to an index
Transitive: to index prices or wages to an economic factor
例
The government decided to index the minimum wage to inflation.
政府は最低賃金をインフレに連動させることを決定しました。
03
索引を作成する, インデックスを付ける
to create or add an index to a document, collection, or system
Transitive: to index a document or book
例
The librarian indexed the new books so students could find them quickly.
司書は新しい本を索引付けしたので、学生はそれらを素早く見つけることができた。
