n.
  - chiefly technical the positioning of things next to each other.
- Grammar  a relationship between two or more words in which the units are grammatically parallel and have the same referent (e.g. my friend Sue).
Derivative
  
    - appositional adj. & n.
- appositive adj. & n.
 
  Etymology
  ME: from late L. appositio(n-), from apponere (see apposite).