- One of two points at the extremities of the axis of any organ or body.
- Either of two points on a sphere at the greatest distance from its equator.
- One of two points in a magnet or an electric battery or cell having extremes of opposite properties; the negative pole is a cathode, the positive pole an anode.
- Either end of a spindle.
- Either of the differentiated zones at opposite ends of an axis in a cell, organ, or organism.
[L. polus, the end of an axis, pole, fr. G. polos]
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