Definition

Noun: 1. A detailed discussion of a particular point or topic that is separate from, but related to, the main subject of a larger written work. It is a digression that provides supplementary information, explanation, or commentary, often found in a footnote, appendix, or as a distinct section within a book or article.

Examples of Usage

• Noun:
  • The historian included a lengthy excursus on medieval farming techniques within his book about political structures.
  • Chapter three contains an interesting excursus on the origins of the phrase.
  • The author's footnote expanded into a full excursus on the topic.

Advanced Usage

• "To include an excursus on...": A formal phrase used to state that a work contains such a digressive discussion.
  • The thesis includes an excursus on the methodological challenges of the study.
• The term is often used in academic, historical, or literary criticism to label a section that, while relevant, is not part of the central narrative or argument.

Variants and Related Words

• Excursional (adj): Pertaining to or of the nature of an excursus. (Rarely used)
• Excursive (adj): Tending to digress; characterized by digressions.
  • His writing style is often excursive, filled with fascinating tangents.

Synonyms

• Digression: A temporary departure from the main subject in speech or writing.
• Appendix: A section of extra information at the end of a book or document.
• Footnote: A note of explanation or comment added to the bottom of a page, which can sometimes develop into an excursus.
• Discursus: (Formal/Literary) A lengthy discussion or treatise on a subject.

Related Phrases

• A note on...: A less formal way to introduce a short digressive explanation.
• A discussion of...: A broader, more general term for treating a topic.

Related Idioms

• To go off on a tangent: An informal idiom meaning to suddenly start discussing a different subject. An is a formal, structured version of "going on a tangent."

Noun

1. a message that departs from the main subject