microfilm
noun
a film bearing a miniature photographic copy of printed or other graphic matter, usually of a document, newspaper or book pages, etc., made for a library, archive, or the like.
Used to express a completed action that took place before another specific past action occurred.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Chase packed 52,000 banknotes in lire into three sacks, but not before police had microfilmed each one.
From Time Magazine Archive
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