Also found in: Acronyms.
a large triangular muscle that is a powerful adductor of the thumb and opposes the thumb to the rest of the digits in gripping.
adductor pollicisA hand muscle.
Transverse head (shaft of 3rd metacarpal); oblique head (front base of 2nd metacarpal, trapezoid, capitate bones).
Medial base of proximal phalanx of thumb.