- a cell that upon division replaces its own numbers and also gives rise to cells that differentiate further into one or more specialized types, as various B cells and T cells.
Origin of stem cell
First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for stem cell
It launches curricular reviews and stem-cell initiatives; it raises money, and buys up property (or at least, it used to).The Truth Behind 'The Social Network'
Rebecca Davis O'Brien
September 8, 2010
Many women who undergo IVF either discard their leftover embryos or donate them for stem-cell research.10 Ways to Have a Baby
September 13, 2009
Maybe they would, but this has played absolutely no part in the stem-cell debate.New York Times' New Columnist Is Full of It
March 16, 2009
Now, Rich writes, “when Barack Obama ended the Bush stem-cell policy last week, there were no such overheated theatrics.”Who Made Frank Rich God?
March 16, 2009
I am often criticized for previously voting for John Kerry and my support of stem-cell research.My Beef With Ann Coulter
March 9, 2009
- histology an undifferentiated cell that gives rise to specialized cells, such as blood 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
- An unspecialized cell that gives rise to a specific specialized cell, such as a blood cell.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
- An unspecialized cell found in fetuses, embryos, and some adult body tissues that has the potential to develop into specialized cells or divide into other stem cells. Stem cells from fetuses or embryos can develop into any type of differentiated cells, while those found in mature tissues develop only into specific cells. Stem cells can potentially be used to replace tissue damaged or destroyed by disease or injury, but the use of embryonic stem cells for this purpose is controversial. Also called progenitor cell
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A major controversy involves the question of whether nonembryonic stem cells should be used for medical purposes.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.