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Definition of checksum
: a sum derived from the bits of a segment of computer data that is calculated before and after transmission or storage to assure that the data is free from errors or tampering
From the M-W Editors
Recent Examples of checksum from the Web
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By tracking the MD5 checksum, which uniquely identifies the original source of a song, Hoffman said that Emusic would be able to track files that were being made available from one individual to other Napster users.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'checksum.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of checksum
1940
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