Apposition

Apposition, a term in Grammar signifying the annexing of one substantive to another, in the same case or relation, in order to explain or limit the first; as, My brother, the physician; Thomas the Rhymer. Whole sentences or clauses admit of apposition; thus, 'Napoleon sought the way to India through Russia—a stroke of genins.' Sometimes a connecting word is used where logical propriety would require apposition; as, the city of Bristol, for the city Bristol.