It is common practice in legal documents to cite to other publications by using standard abbreviations for the title of each source. Abbreviations may also be found for common words or legal phrases. Such citations and abbreviations are found in court decisions, statutes, regulations, journal articles, books, and other documents. Below is a basic list of very common abbreviations. Because publishers adopt different practices regarding how abbreviations are printed, one may find abbreviations with or without periods for each letter. For example, the Code of Federal Regulations may appear abbreviated as "C.F.R." or just as "CFR."
For abbreviations not found in this list, here are alternate websites to search:
ad.,ads.,adsm. — ad sectam (Latin), at the suit of. Used in colonial and Federal Era American cases when the defendant is listed first; e.g., "John Doe v. Richard Roe" is labeled "Richard Roe ads. John Doe." The long script "S" of the period often makes this appear as "adj."
USC — United States Code (A free website for the full text is at U.S. Code. This text is maintained by the U.S. Gov't Printing Office, but must be checked for revisions or amendments after its effective date.)