stem cell
Americannoun
noun
"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 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.
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Also called progenitor cell
Discover More
A major controversy involves the question of whether nonembryonic stem cells should be used for medical purposes.
Etymology
Origin of stem cell
First recorded in 1880–85
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
When stem cells were exposed to these nanoflowers, they began producing about twice as many mitochondria as usual.
From Science Daily
They then used a gentle pre-transplant preparation involving immune-targeting antibodies and low-dose radiation, followed by a transplant of blood stem cells and islet cells from an unrelated donor, to restore blood sugar control.
From Science Daily
There is a sense of anticipation as a member of the research team opens a large a metal cryopreservation tank where Oliver's gene edited stem cells are frozen, having been transported back from GOSH.
From BBC
In a study published in Cell Stem Cell, scientists tested retinal pigment epithelial stem cells in a phase 1/2a clinical trial.
From Science Daily
These stem cells can develop into many different cell types based on the signals present in their environment.
From Science Daily
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.