synonymes
adjonction (n.f.)
about, aboutement, accession, addition, affectation, affiliation, ajout, ajoutage, ajoutement, allonge, annexe, annexion, association, avenant, jonction, juxtaposition, raccord, rajout, rallonge, rattachement, réunion
adjonction (n.f.) (grammaire)
complément (grammaire)