Adiectum

Adiectum is a Latin noun (neuter singular) meaning something added, an addition or appendix. It is formed from the verb adicio, “to add,” and the past participle adiectus, with adiectum functioning as a noun meaning “that which has been added.” The neuter plural form is adiecta, used when referring to multiple additions.

In usage, adiectum appears in classical and medieval Latin to designate an appended element rather than the original content. It can refer to addenda in manuscripts, marginal notes added after the main text, or to clauses, passages, or items subsequently incorporated into a document, treaty, or will. In legal and administrative contexts, the term signals modifications or additions to contracts, lists, or codices. In scholarly editing, adiecta or adiectum may denote notes, glosses, or corrections appended to a base text.

The term is often contrasted with the core body of the text or item to which it is attached, serving as a label for the supplementary portion. In modern scholarly editions and commentaries, adiectum is encountered when describing material that has been added to the original work, as opposed to the material that constitutes the primary text.

See also: addendum, appendix, annex.