stem cell

American  

noun

Cell Biology.

1. 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.

---

stem cell British  

noun

1. histology an undifferentiated cell that gives rise to specialized cells, such as blood cells

---

stem cell Scientific  

1. 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.

2. Also called progenitor cell

---

stem cell Cultural  

1. A cell from which a variety of other cells can develop through the process of cellular differentiation. Stem cells can produce only a certain group of cells (as with skin stem cells) or any cell in the body (as with embryonic stem cells).

---

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

A Norwegian man has been effectively cured of HIV after receiving a stem cell transplant from his brother, doctors announced on Monday.

From Barron's • Apr. 13, 2026

RFK Jr. has said he has taken antiaging therapies and has previously spoken about the need to accelerate the availability of stem cell therapies nationally.

From Slate • Mar. 30, 2026

He pledged to fix the FDA’s “bias” against stem cell treatments, hyperbaric chambers, and peptides, among others.

From Slate • Mar. 30, 2026

Stoddart-Stones, who is also on the stem cell register, said she wants to help the health service after being poorly as a baby and after her father was treated for cancer.

From BBC • Mar. 13, 2026

Many of these shared regions were linked to immune function, inflammation, or stem cell maintenance.

From Science Daily • Feb. 28, 2026