[co.he.sion] n [L cohaesus, pp. of cohaerere] (1660) 1: the act or state of sticking together tightly; esp: unity "the lack of ~ in the Party --Times Lit. Supp."
2: union between similar plant parts or organs
3: molecular attraction by which the particles of a body are united throughout the mass -- co.he.sion.less adj