Definition of "microfilm" []

• A film on which printed materials are photographed at greatly reduced size for ease of storage. (noun)
• A reproduction on this kind of film. (noun)
• To reproduce (documents, for example) on microfilm. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "And these libraries do not even do a thorough job of checking that the microfilm is clear and legible, so entire issues are lost and can never be recovered, because the originals have already been turned to pulp."
• "Often the microfilm is worn out and no effort is made to improve the situation."
• "Common situations: Ten years ago, records of interest to genealogists were available primarily in microfilm format."