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alternating calculus in Medicine

alternating calculus

(ôltər-nā′tĭng, ăl-)
n.
  1. A urinary calculus having successive layers of different composition.combination calculus
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.