co ‧ he ‧ sion /kəʊˈhiːʒ ə n $ koʊ-/ BrE AmE noun [uncountable]
[ Date: 1600-1700 ; Language: Latin ; Origin: cohaesus , past participle of cohaerere ; ⇨ ↑ cohere ]
1 . if there is cohesion among a group of people, a set of ideas etc, all the parts or members of it are connected or related in a reasonable way to form a whole:
a sense of community and social cohesion
2 . technical a close relationship, based on grammar or meaning, between two parts of a sentence or a larger piece of writing