Initialism of electronically stored information.
A guide to ESI
• Initialism of extremely sensitive information.
(Proper noun) Initialism of Edge Side Includes (a markup language for assembling web pages with dynamic content, based on special tags inserted into the HTML code).
• Initialism of Employees' State Insurance, a health insurance company in India.
Why ESI is relevant in U.S. law
ESI appears in U.S. legal practice across multiple practice areas. Knowing what it means — and when it applies — can determine the outcome of motions, filings, and negotiations. For non-lawyers, the value of looking up a precise definition is that legal terms often carry meanings that differ from everyday usage; relying on the common meaning can lead to costly missteps.
When and how ESI applies
In practice, ESI is invoked when parties, judges, or attorneys need to identify the legal status of an issue, the rights of those involved, or the procedural step required next. The definition shown above is sourced from Wiktionary , which is widely cited in U.S. legal practice. Because U.S. law is jurisdictionally layered — federal, state, and sometimes local — the precise application of the term can vary by court, so check the controlling authority for your specific case.