1. Movement of a body part toward the median plane (of the body, in the case of limbs; of the hand or foot, in the case of digits).
2. Monocular rotation (duction) of the eye toward the nose.
3. A position resulting from such movement.
The information shown above for adduction is provided by Stedman's.
* Stedman's, part of Lippincott Williams & Wilkins, provide a comprehensive line of health-science publications for healthcare professionals and medical students.