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growth factor

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noun
  1. any of various proteins that promote the growth, organization, and maintenance of cells and tissues.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for growth factor

growth factor

noun
  1. any of several substances present in serum that induce growth of cells. Excessive amounts of growth factor may be associated with the production of cancer cells
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

growth factor in Medicine

growth factor

n.
  1. A substance that affects the growth of an organism.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.