Definition of "Adhesion" :

noun: faithful support for a cause or political party or religion

"The adhesion of Seville was decisive."

noun: the property of sticking together (as of glue and wood) or the joining of surfaces of different composition

"A heated hydraulic press was required for adhesion."

noun: a fibrous band of scar tissue that binds together normally separate anatomical structures

noun: abnormal union of bodily tissues; most common in the abdomen