adhesion in WordNet English dictionary

1. faithful support for a cause or political party or religion
   "attachment to a formal agenda"; "adherence to a fat-free diet"; "the adhesion of Seville was decisive"
   attachment  adherence  adhesion 
   
2. the property of sticking together (as of glue and wood) or the joining of surfaces of different composition
   "the mutual adhesiveness of cells"; "a heated hydraulic press was required for adhesion"
   adhesiveness  adhesion  adherence  bond 
   
3. a fibrous band of scar tissue that binds together normally separate anatomical structures
   adhesion 
   
4. abnormal union of bodily tissues; most common in the abdomen
   adhesion