adjoin

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Verb

1. {{lb|en|ambitransitive}} To share a [[common]] [[boundary]] or [[border]] with; to be physically [[contiguous]] to (a piece of land or property).
2. {{lb|en|transitive|mathematics|chiefly|algebra|and|number theory}} To extend an algebraic object (e.g. a field, a ring{{,}} etc.) by adding to it an element not belonging to it and then ensuring [[closure]], for example by also adding all finite power series of the element.

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.