blastema
noun
blas·te·ma
bla-ˈstē-mə 
plural blastemas or blastemata
bla-ˈstē-mə-tə
: a mass of undifferentiated cells capable of growth and differentiation
Examples of blastema in a Sentence
Recent Examples on the Web
There were outgrowths above the blastema—the animals were producing more tissue.
—
Jacek Krywko, ArsTechnica, 26 June 2025
Within the first few days after the injury, a blastema—a mass of heterogeneous cells—formed at the wound site.
—Jacek Krywko, ArsTechnica, 26 June 2025
If it's needed, wnt signaling may also be reactivated during regeneration after the loss of major portions of the animal, inducing the blastema to form new tail structures.
—John Timmer, ArsTechnica, 18 Apr. 2025
The process has been well-studied by this point and involves the formation of a cluster of stem cells, called a blastema, at the site of damage.
—John Timmer, ArsTechnica, 18 Apr. 2025
Most cells making up the blastema are not stem cells from the bulb that migrate to the tip.
—Elizabeth Rayne, Ars Technica, 3 Jan. 2024
Thanks to that cocktail, in 25 animals the tissue created a blastema — no nerve necessary.
—Amber Dance, Smithsonian Magazine, 31 Jan. 2020
What determines which cells migrate into a blastema, and which stay put?
—Amber Dance, Smithsonian Magazine, 31 Jan. 2020
The first phase of the Pentagon’s plan to regrow soldiers’ limbs is complete; scientists managed to turn human skin into the equivalent of a blastema — a mass of undifferentiated cells that can develop into new body parts.
—Noah Shachtman, WIRED, 25 Mar. 2009
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Jacek Krywko, ArsTechnica, 26 June 2025
Within the first few days after the injury, a blastema—a mass of heterogeneous cells—formed at the wound site.
—Jacek Krywko, ArsTechnica, 26 June 2025
If it's needed, wnt signaling may also be reactivated during regeneration after the loss of major portions of the animal, inducing the blastema to form new tail structures.
—John Timmer, ArsTechnica, 18 Apr. 2025
The process has been well-studied by this point and involves the formation of a cluster of stem cells, called a blastema, at the site of damage.
—John Timmer, ArsTechnica, 18 Apr. 2025
Most cells making up the blastema are not stem cells from the bulb that migrate to the tip.
—Elizabeth Rayne, Ars Technica, 3 Jan. 2024
Thanks to that cocktail, in 25 animals the tissue created a blastema — no nerve necessary.
—Amber Dance, Smithsonian Magazine, 31 Jan. 2020
What determines which cells migrate into a blastema, and which stay put?
—Amber Dance, Smithsonian Magazine, 31 Jan. 2020
The first phase of the Pentagon’s plan to regrow soldiers’ limbs is complete; scientists managed to turn human skin into the equivalent of a blastema — a mass of undifferentiated cells that can develop into new body parts.
—Noah Shachtman, WIRED, 25 Mar. 2009
Cite this Entry
“Blastema.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/blastema. Accessed 24 Jul. 2025.
Copy CitationMedical Definition
blastema
noun
blas·te·ma
bla-ˈstē-mə
plural blastemas also blastemata
-mət-ə
: a mass of living substance capable of growth and differentiation
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