Adduction is a word used to describe the movement of bringing a body part towards the middle of the body. It is opposite to abduction, which means moving a body part away from the body's midline. Full definition
These figures indicate that the hamstrings are not particularly active in hip adduction in the anatomical position. (strengthandconditioningresearch.com)
The moment arms (and therefore the leverage) of the pectoralis major for horizontal adduction of the shoulder reduces steadily to a minimum as the hands move closer together. (strengthandconditioningresearch.com)
Therefore, the superior performance of the flat bench press over the incline bench press for the sternocostal head is probably because there is a greater horizontal shoulder adduction moment in the flat and decline variations, but a larger shoulder flexion moment in the incline variations. (strengthandconditioningresearch.com)