annex
n. countablen. an extra building or room that is added to a larger one. It can also be an extra part at the end of a document.
n. a subsidiary building or an extension to a main structure, often used to provide additional space. In a documentary context, it refers to an appendix or supplementary addition to a formal text.
The school built a new annex for the science labs.
The hotel guests were moved to the quiet annex across the garden while the main lobby was being renovated.
The legal team spent the afternoon reviewing the technical specifications contained in the third annex of the trade agreement to ensure compliance with international standards.
Borrowed from French annexe, from Latin annexus. More at Etymology 2.
From Middle English annexen, anexen, from Old French annexer (“to join”), from Medieval Latin annexāre, infinitive of annexō, frequentative of Latin annectō (“bind to”), from ad (“to”) + nectō (“tie, bind”). Compare the rare annect. Doublet of adnex.
Often used to describe physical structures or supplementary sections of legal and administrative documents.