Medical Definition of hand
1a: the terminal part of the vertebrate forelimb when modified (as in humans) as a grasping organ: the forelimb segment (as the terminal section of a bird's wing) of a vertebrate higher than the fishes that corresponds to the hand irrespective of its form or functional specializationb: a part serving the function of or resembling a hand; especially : the hind foot of an apec: something resembling a hand; especially : an indicator or pointer on a dial
2: a unit of measure equal to 4 inches or 10.2 centimeters used especially for the height of horses
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