macroamylase

[măk′rō-ămə-lās′, -lāz′]
n.
  1. A serum amylase in which the enzyme is present as a complex joined to a globulin, resulting in a complex that has a high molecular weight that inhibits its renal excretion.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.