Medical Dictionary
spin
noun \ˈspin\
Medical Definition of SPIN
1
: a quantum characteristic of an elementary particle that is visualized as the rotation of the particle on its axis and that is responsible for measurable angular momentum and magnetic moment
2
: the angular momentum which is associated with spin, whose magnitude is quantized, and which may assume either of two possible directions; also : the angular momentum of a system of elementary particles derived from their spins and orbital motions—see spin echo, spin label
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