microfilm

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun film on which materials are photographed at greatly reduced size; useful for storage; a magnification system is used to read the material
verb record on microfilm

From micro- + film.

He came back with a microfilm roll. — Plague Ship, Andre Norton
The real indexes were in the sub-basement; here, on microfilm, were only the basic divisions. — Supermind, Randall Garrett
The real indexes were in the sub-basement; here, on microfilm, were only the basic division. — Occasion ... for Disaster, Randall Garrett

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