from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A substance that affects the growth of a cell or an organism.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A naturally-occurring substance capable of stimulating cellular growth, proliferation, and cellular differentiation.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a protein that is involved in cell differentiation and growth


Sorry, no etymologies found.


    Sorry, no example sentences found.


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