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2. in nucleonics, a chain-reacting fission device for producing slow neutrons and radioisotopes.
sentinel pile a hemorrhoid-like thickening of the mucous membrane at the lower end of an anal fissure.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
a circumscribed thickening of the mucous membrane at the lower end of a fissure of the anus.
Farlex Partner Medical Dictionary © Farlex 2012
sentinel pileThe swelling at the lower end of a chronic anal fissure, palpable as an anal mass, which may be the first or most prominent manifestation of a fissure, hence, a 'sentinel'
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
sen·ti·nel pile(sen'ti-nĕl pīl)
A circumscribed thickening of the mucous membrane at the lower end of a fissure of the anus.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012