What does adduction mean?
Adduction is a technical term from anatomy and physiology that describes the movement of a limb or other body part toward the midline of the body. Raising your arms out to the sides and then lowering them back down involves adduction; so does squeezing your knees together or pressing your fingers toward one another. For the fingers and toes, the reference point shifts from the body's centerline to the axis of the hand or foot. The word is most often encountered in medical, fitness, and rehabilitation settings, where clinicians assess adduction as part of a joint's range of motion, frequently contrasting it with its opposite, abduction. It derives from the Latin adducere, 'to lead toward,' sharing a root with words such as deduce and reduce. Though precise and useful within its domain, adduction remains a specialist term, seldom appearing outside professional discussions of human movement.
The movement of a limb or other part of the body toward the midline of the body, or toward the axis of the hand or foot in the case of digits.
"Limited hip adduction can affect a person's walking gait."
Almost always used in medical, anatomical, or fitness contexts, often contrasted with abduction.
(Chiefly historical, in logic) The act of adducing; the citation or bringing forward of evidence, reasons, or examples.
"The philosopher's treatise relied on the careful adduction of classical authorities."
This sense is now rare and found mainly in older texts.
The plural is uncommon because adduction usually refers to a type of movement rather than countable instances; it appears occasionally in clinical writing describing repeated movements.
"The rehabilitation program included sets of twenty hip adductions twice daily."
Every time you clap your hands, you're performing adduction — the same Latin root that gives us 'deduce' literally means 'to lead toward.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of adduction
Adduction comes from the Latin adducere, meaning 'to lead or bring toward,' formed from ad- ('toward') plus ducere ('to lead'). It entered English in the early modern period, initially carrying both a general sense of citing evidence and the anatomical sense of drawing a limb inward. The anatomical usage became dominant as scientific terminology standardized. It shares its Latin root with a family of 'leading' words including deduce, induce, produce, and reduce.
Related word forms
How adduction is actually used
Adduction is a technical term used almost exclusively in anatomy, physiology, sports medicine, and rehabilitation contexts; it is rare in everyday conversation. It is typically paired with its opposite, abduction, when describing range of motion. The logical sense of the word is largely obsolete, surviving mainly in older philosophical texts.
Easily confused with adduction
Abduction is the opposite movement — drawing a limb away from the body's midline — whereas adduction draws it toward the midline.