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Online public access catalog

(OPAC) A computerised system to catalogue and organise materials in a library (the kind that contains books). OPACs have replaced card-based catalogues in many libraries. An OPAC is available to library users (public access).


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  • Online service

    noun See online service provider

  • Online service provider

    noun an entity which provides a service online, esp. any business that provides its subscribers with a wide variety of data transmitted over telecommunications lines; also called online service

  • Online-thesaurus

    noun, plural online thesauruses, online thesauri. 1. a thesaurus or dictionary of words with the same or nearly the same meanings, or synonyms, and their opposites, or antonyms, such as Thesaurus.com, available on the Internet or the World Wide Web, accessed through a web browser, and used by entering a query term into a search […]

  • Online shopping

    noun electronic shopping; shopping done via the Internet; also called e-shopping Examples Online shopping is keeping UPS very busy this year. See e-shopping

Disclaimer: Online public access catalog definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.