card index

noun

Definition of card index

chiefly British
: a set of cards that have information written on them and are arranged in alphabetical order especially : a set of cards in a library that have information about books, journals, etc., written on them and are arranged in alphabetical order : card catalog

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“Card index.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/card%20index. Accessed 11 December 2019.

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