Definition
Latin abbreviation for et alii (masculine plural), et aliae (feminine plural), or et alia (neuter plural), meaning "and others." In legal contexts, et al. is used in case captions, citations, and pleadings to indicate that additional parties — plaintiffs, defendants, or other named participants — exist beyond those explicitly listed. When a lawsuit involves multiple parties on one or both sides, only the first-named party may appear in the shortened case caption, with et al. standing in for the rest.
Common Language
Modern common usage (Wiktionary): An abbreviation meaning "and others," used broadly in academic, scientific, and general writing to shorten lists of authors or contributors.
Historical common usage (Webster's 1913): Not separately defined; the phrase was treated as a standard Latin abbreviation in general educated use.
Editorial note: The common and legal uses are largely consistent in meaning, but diverge in consequence. In ordinary writing, et al. is a stylistic shorthand with no procedural significance. In legal documents, its use carries real weight: it may affect whether all parties are properly identified, whether service of process reaches every named defendant, and how a judgment binds non-listed parties. Researchers encountering et al. in a case caption must look past the abbreviation to the full party list in the underlying record.
Common Confusion
Et al. is occasionally confused with et ux. (et uxor, "and wife"), et vir ("and husband"), and et seq. (et sequentes, "and the following"). These are distinct abbreviations. Et al. refers to additional persons; et seq. refers to additional pages or sections of a text. Burrill's draws a further distinction between et al. (and another, singular) and et als. (and others, plural) — a nuance that largely collapsed in modern practice, where et al. serves both functions.
Why It Matters in Research
The primary research trap with et al. is that abbreviated captions obscure who is actually a party. A case indexed or headlined as Smith et al. v. Jones et al. may involve dozens of plaintiffs and defendants whose identities are essential to understanding the scope of a judgment, the nature of the dispute, or the precedential reach of the decision. Researchers working in the Law Mind corpus should treat et al. in any case caption as a signal to locate the full caption in the original filing or docket.
In historical sources — especially Year Book materials and early common law reporters — the phrase et alii è contra appears frequently in descriptions of issue joinder, where multiple parties on the opposing side collectively signaled readiness for trial. Black's first edition flags this usage directly. Researchers reading pre-modern English case law should recognize this as a procedural formula, not merely a citation shorthand.
The abbreviation also appears in deeds, wills, and conveyancing instruments in older records, where identifying which "others" are encompassed can be legally significant. Chain-of-title research and probate analysis often require resolving et al. references into full named parties.
Historical Dictionary Support
The historical dictionaries are consistent on the core meaning but reveal a grammatical precision that modern practice has abandoned. Burrill's distinguishes et al. (abbreviating et alius or et alium — and another, singular) from et als. (abbreviating et alios — and others, plural). This distinction was observed more carefully in formal pleading of earlier centuries. Black's first and second editions collapse this into a single entry equating et al. with et alii and the meaning "and others," reflecting the modern convention.
Black's first edition adds the Year Book phrase et alii è contra, providing the most substantive historical context of the three sources. The phrase appears in early English case reporting as a stock formula confirming that multiple defendants or opposing parties jointly joined issue and consented to trial by jury — the "so to the country" conclusion indicating a jury trial would follow. This usage is purely procedural and has no direct modern equivalent, but understanding it is necessary for reading Year Book entries accurately.
None of the three dictionaries address the modern citation use of et al. in academic or legal scholarship (shortening multi-author references), which emerged as a distinct convention through the twentieth century. Researchers should not assume historical dictionary definitions speak to that context.
Jurisdictional Note
Usage of et al. in case captions is universal across American federal and state courts, though local rules vary on whether abbreviated captions are permitted in particular filing types. Some jurisdictions require full party names on certain documents (such as complaints, judgments, and writs) even when et al. is acceptable in subsequent motion practice.