The act, state or process of sticking together.
In chemistry and physics, cohesion refers to the sticking together of alike molecules, such as water molecule being attracted to another water molecule. Cohesion also causes water molecules to form drops.
Word origin: From Latin cohaesus, past participle of cohaerēre, to cling together.
Related forms: cohesive (adjective), cohesively (adverb)
Related term: Cohesion Tension Theory