Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
an extract consisting of the water-soluble, nonprotein constituents of fresh mammalian liver, that can promote the formation of blood cells
Used by arrangement with John Wiley & Sons, Inc.
nounThe American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A dry brownish powder containing the soluble thermolabile fraction of mammalian livers that is capable of stimulating the production of red blood cells.