Secondary source
Secondary source: Material that explains or analyzes the law, such as treatises and articles, but is not itself the law.

What secondary source means
Put simply, secondary source is part of the working vocabulary of a civil case. The short definition above covers the usual meaning. Still, a specific rule, statute or contract can give it a narrower meaning. For that reason, check how it is used in your own documents.
Where secondary source comes up
The term is used across many kinds of cases. For example, you may see it in pleadings, motions and court orders. To see it in context, browse the motions and procedures library or the Learn the Law topics.
How to research the term
To research secondary source, begin with the rule, statute or contract where the word is used. Each one can give it a slightly different meaning. Then compare that text with how courts in your area have applied it. Also check the local rules of your court, since they can add requirements. If your case is in state court, the state rules control. So start with our state procedures guide to find them. In the end, always confirm that the source you rely on is current.
You can read the current federal court rules online for free.
Related legal terms
- Sanctions: penalties a court may impose for violating rules or orders.
- Scheduling order: a court order setting deadlines for the main stages of a case.
- Securitization: pooling loans or receivables and selling interests in the pool to investors, who are paid from the pooled assets.
- Security (investment): under federal securities law, a broad category of investments including notes, stocks, bonds, evidences of indebtedness and investment contracts.
Why precise terms matter
Courts read legal terms closely. As a result, knowing the exact meaning of a word helps you follow orders, rules and filings. Each glossary entry on Lawtopolis is short on purpose and links to the pages where the term is used.
Sources
Sources last reviewed: 2026-10-23
Lawtopolis provides legal information and education, not legal advice. Using this site does not create an attorney-client relationship. Laws and court rules vary by jurisdiction and change over time; verify every authority against the official source and consult a licensed attorney in your jurisdiction about your situation.
