from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Anatomy A small bodily cavity or sac.
- n. Anatomy A crypt or minute cul-de-sac or lacuna, such as the depression in the skin from which the hair emerges.
- n. Anatomy An ovarian follicle.
- n. Anatomy A spherical mass of cells usually containing a cavity.
- n. Botany A dry, single-chambered fruit that splits along only one seam to release its seeds, as in larkspur and milkweed.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small cavity or sac, such as a hair follicle.
- n. A type of primitive dry fruit produced by certain flowering plants.
from the GNU version of the Collaborative International Dictionary of English
- n. A simple podlike pericarp which contains several seeds and opens along the inner or ventral suture, as in the peony, larkspur and milkweed.
- n. A small cavity, tubular depression, or sac.
- n. A simple gland or glandular cavity; a crypt.
- n. A small mass of adenoid tissue.
from The Century Dictionary and Cyclopedia
- n. In botany: A dry one-celled seed-vessel consisting of a single carpel, and dehiscent only by the ventral suture, as in the milkweed and larkspur.
- n. Any bladder-shaped appendage; a utricle.
- n. In anatomy and zoology, a minute secretory or excretory cavity, sac, or tube; one of the ultimate blind ramifications of a secretory surface; a glandular cul-de-sac; a mucous crypt or lacuna; a minute nodule of lymphoid tissue.
- n. In entomology, a cocoon; the covering made by a larva for its protection during the pupa state.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any small spherical group of cells containing a cavity
Once the follicle is heavily damaged or destroyed, it no longer has the ability to grow hair.
Another accessory organ of the integument associated with the hair follicle is the sebaceous gland.
The hair-growth cycle consists of growth, regression (the hair falls out, destroying the lower part of the follicle), rest (the follicle is dormant), and re-initiation of growth (the follicle repairs itself and grows a new hair).
An older, commonly used egg-supply marker known as follicle-stimulating hormone, or FSH, also measured through a blood test, can be taken only on days two, three or four of a menstrual cycle, may be affected by birth-control pills, and has greater variability.
As the child nears puberty, a gland in the brain called the pituitary gland increases the secretion of a hormone called follicle-stimulating hormone FSH.
It is therefore called the follicle-stimulating hormone, usually abbrevi - ated FSH.
= Each primitive or primordial ovum  is imbedded in a little vesicle or follicle, which is generally known as
The structure of the hair is very beautiful, and each hair is contained in a delicate sheath which fits into a slight depression in the skin called the follicle, and around the base of the hair nature has provided glands to secrete oily matter, the purpose of which is to keep the hair glossy.
The stem cells develop into specialized cells, called follicle cells, over a series of nine generations of cell divisions.
A follicle is a somewhat tubular structure made mostly of dermal tissues.