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hair follicle
noun
: the tubular epithelial sheath that surrounds the lower part of the hair shaft and encloses at the bottom a vascular papilla supplying the growing basal part of the hair with nourishment see hair illustration
Examples of hair follicle in a Sentence
Recent Examples on the Web
Cooling caps, worn before, during, and after chemotherapy, may reduce hair loss by cooling the scalp and constricting the blood vessels, preventing chemotherapy from reaching the hair follicles.
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Julie Scott, Msn, Anp-Bc, Aocnp, Verywell Health, 11 Feb. 2025
Hair grows in three stages, driven by stem cells inside the hair follicles: anagen, catagen, and telogen.
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Cristina Mutchler, Health, 30 Jan. 2025
According to Collins, hair growth masks work by nourishing the scalp, which promotes healthier hair follicles and therefore encourages hair growth.
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Jenny Berg, Vogue, 4 Feb. 2025
But can certain essential oils actually stimulate hair follicles and generate new or faster growth?
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Eva Crouse, Flow Space, 31 Jan. 2025
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Word History
First Known Use
1838, in the meaning defined above
Dictionary Entries Near hair follicle
Cite this Entry
“Hair follicle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hair%20follicle. Accessed 22 Feb. 2025.
Kids Definition
hair follicle
noun
: the tube-shaped sheath surrounding the lower part of a hair shaft
Medical Definition
hair follicle
noun
: the tubular epithelial sheath that surrounds the lower part of the hair shaft and encloses at the bottom a vascular papilla supplying the growing basal part of the hair with nourishment
More from Merriam-Webster on hair follicle
Britannica.com: Encyclopedia article about hair follicle
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