ad•ap•ta•tion (ad´əptā´shən) n.

 1 an adapting or being adapted
 2 a thing resulting from adapting[this play is an adaptation of a novel]
 3 a change in structure, function, or form that improves the chance of survival for an animal or plant within a given environment
 4 the natural reactions of a sense organ to variations in the degree of stimulation
 5 Sociology a gradual change in behavior to conform to the prevailing cultural patterns
—ad´apta´tional adj.