1. A series of plates of two different metals imposed alternately one on the other, separated by a sheet of material moistened with a dilute acid solution, used to produce a current of electricity. [L. pila, pillar] 2. An individual hemorrhoidal tumor. See hemorrhoids. [L. pila, ball]
- sentinel p. a circumscribed thickening of the mucous membrane at the lower end of a fissure of the anus.
- thermoelectric p. SYN: thermopile.
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pile 'pī(ə)l n
1) a single hemorrhoid
Medical dictionary. 2011.