#kinesiology

• Adduction — A physiological or biomechanical movement by which a limb or an anatomical segment is brought closer to the median symmetrical plane of the body. This structural phenomenon is the opposite of abduction and is controlled by specific muscle groups ensuring the kinematic and functional balance of the locomotor system.
• Adductor — A structural muscle that brings a limb, organ, or anatomical segment closer to the median axis of the body or to a reference element. In biology, the term also defines the powerful muscle that enables the tight closing of the two valves of the shell in some species of bivalve mollusks.
• Adduction — The anatomical movement that draws a limb or segment toward the median plane of the body or a reference axis, acting as the exact opposite of abduction. In hydrotechnical and civil engineering, the term represents the complete assembly of structures, aqueducts, or pipelines designed to capture and convey raw water from its source directly to a treatment plant or distribution network.
• Adductor — A muscle whose contraction causes adduction, drawing a limb or anatomical segment toward the midline of the body or a reference plane. As an adjective, the term describes any structure, organ, or biological mechanism performing this internal pulling motor function. In humans, the most prominent examples are the thigh adductors (longus, brevis, and magnus), located in the medial compartment, playing a crucial role in pelvic stabilization and locomotion.