Metadata meaning

mĕt'ə-dā'tə, -dăt'ə, -dä'tə
The definition of metadata is information about other information.

An example of metadata is a card catalog in a library, giving information about books.

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Data that describes other data, as in describing the origin, structure, or characteristics of computer files, webpages, databases, or other digital resources.
pluralNoun
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Data that describes or underlies other data.
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(1) (The Metadata Company, LLC, Long Beach, CA, www.metadata.com). Formerly Metadata Information Partners, Metadata is a software firm offering a variety of data management products and services. In 1986, the U.S. Patent and Trademark Office granted the company incontestable status for the Metadata trademark. Whenever the term is used generically in this encyclopedia (definition #2 below), it is spelled with a dash (meta-data).
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From the Greek meta, meaning beside or after, and the Latin datum, meaning what is given. Data about data, that is, data that describes other data. For example, the title, subject, publisher, and author comprise metadata about its contents.
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Data that describes other data, serving as an informative label.

Most websites contain metadata to tell the computer how to lay the words out on the screen.

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Origin of metadata

meta- +"Ž data