Medical Definition of adductor
1: any of three powerful triangular muscles that contribute to the adduction of the human thigh:a: one arising from the superior ramus of the pubis and inserted into the middle third of the linea aspera—called also adductor longusb: one arising from the inferior ramus of the pubis and inserted into the iliopectineal line and the upper part of the linea aspera—called also adductor brevisc: one arising from the inferior ramus of the pubis and the ischium and inserted behind the first two into the linea aspera—called also adductor magnus
2: any of several muscles other than the adductors of the thigh that draw a part toward the median line of the body or toward the axis of an extremity
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