Adduction is a movement which brings a limb — arm or leg — closer to the sagittal plane of the body. It is opposed to abduction.
This term is also used in reference to the operation of the muscle in anatomy or musculature.
cartilaginous: Synchondrosis - Symphysis
synovial: Plane joint - 1° (Hinge joint, Pivot joint) - 2° (Condyloid joint, Saddle joint) - 3° (Ball and socket joint)
specialized/upper limbs: Protraction/Retraction - Supination/Pronation