ICYMI
ICYMI definition by Slang.net
This page explains what the acronym "ICYMI" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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ICYMI is an acronym that means in case you missed it. It is often used on Twitter, blogs, or social networking sites.
The acronym is usually associated with a news story that was buried by another event or that took place late at night when people were sleeping. It commonly prefaces a link that redirects to a news story, or possibly to another "tweet" or blog post.