follicle

Definitions

  • WordNet 3.6
    • n follicle any small spherical group of cells containing a cavity
    • ***
Webster's Revised Unabridged Dictionary
  • Interesting fact: The reason why hair turns gray as we age is because the pigment cells in the hair follicle start to die, which is responsible for producing "melanin" which gives the hair colour
    • Follicle (Anat) A simple gland or glandular cavity; a crypt.
    • Follicle (Bot) A simple podlike pericarp which contains several seeds and opens along the inner or ventral suture, as in the peony, larkspur and milkweed.
    • Follicle (Anat) A small cavity, tubular depression, or sac; as, a hair follicle .
    • Follicle (Anat) A small mass of adenoid tissue; as, a lymphatic follicle .
    • ***
Century Dictionary and Cyclopedia
  • Interesting fact: Humans have about the same number of hair follicles as a chimpanzee has
    • n follicle 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 follicle Any bladder-shaped appendage; a utricle.
    • n follicle 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. A sebaceous follicle is a gland of the skin secreting a greasy substance; a gastric follicle is one of the glandular tubes of the mucous membrane of the stomach secreting gastric juice; an intestinal follicle is one of the secretory mucous crypts of the intestines; a Graafian follicle is a little sac in an ovary in which an ovum matures. The solitary and agminate glands, glands of Brunner, Peyer's patches, crypts of Lieberkühn, etc., are all follicles or aggregations of follicles. The term is sometimes extended to a cluster of follicles, thus being made synonymous with gland.
    • n follicle In entomology, a cocoon; the covering made by a larva for its protection during the pupa state.
    • ***
Chambers's Twentieth Century Dictionary
  • Interesting fact: A follicle that is more oval in shape will produce curlier hair, which, when viewed under a microscope, is more "flat" in appearance than a straight hair, which is "round".
    • n Follicle fol′i-kl (anat.) a gland:
    • n Follicle fol′i-kl (bot.) a seed-vessel
    • ***

Etymology

Webster's Revised Unabridged Dictionary
L. folliculus, a small bag, husk, pod, dim of follis, bellows, an inflated ball, a leathern money bag, perh. akin to E. bellows,: cf. F. follicule,. Cf. 2d Fool
Chambers's Twentieth Century Dictionary
Fr.,—L. folliculus, dim. of follis, a wind-bag.

Usage

In literature:

They generally open into the hair follicles, occasionally on the surface of the body.
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
Follicles are also supplied with veins and organic nerves.
"A Treatise on Anatomy, Physiology, and Hygiene (Revised Edition)" by Calvin Cutter
Some follicles have none, others a number varying perhaps from one-fourth to three-fourths of the whole number.
"Studies in Spermatogenesis (Part 1 of 2)" by Nettie Maria Stevens
The very young follicles are spherical, the older ones ovoid in form.
"Studies in Spermatogenesis" by Nettie Maria Stevens
We need to do an ultrasound scan to make doubly sure an ovarian follicle has ruptured when it's scheduled to and dropped an egg.
"Life Blood" by Thomas Hoover
Each ovary of a female obtained on October 23 contained five enlarged follicles, about 1 mm.
"Some Reptiles and Amphibians from Korea" by Robert G Webb
The latter follows severe infection of the hair-follicles of the eyelashes.
"The New Gresham Encyclopedia" by Various
It is rare to meet with a solitary follicle forming the fruit.
"Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3" by Various
Size of ovarian follicles was determined by means of a clear plastic gauge containing notches 5, 10, 15, 20, and 25 millimeters wide.
"Natural History of the Ornate Box Turtle, Terrapene ornata ornata Agassiz" by John M. Legler
Reproductive females also contain follicles of various sizes.
"Natural History of Cottonmouth Moccasin, Agkistrodon piscovorus (Reptilia)" by Ray D. Burkett
All are situated about the orifices of the follicles and glands of the skin.
"A System of Practical Medicine by American Authors, Vol. I" by Various
Capsule 2-celled, separating into 2 follicles, each ripening few seeds.
"The Manual of the Botany of the Northern United States" by Asa Gray
Within this are numerous cavities, the Graafian follicles.
"The Cambridge Natural History, Vol X., Mammalia" by Frank Evers Beddard
These turtles collected in April and May have ovarian follicles not exceeding three millimeters in diameter.
"North American Recent Soft-shelled Turtles (Family Trionychidae)" by Robert G. Webb
Gash the flesh between them (they are set in rows), but leave the follicles themselves untouched.
"Taxidermy and Zoological Collecting" by William T. Hornaday
No regular follicle is formed, but the oocyte absorbs nutriment from the remaining oogonia.
"Encyclopaedia Britannica, 11th Edition, Volume 14, Slice 2" by Various
These small hemorrhages occur very frequently about the hair follicles and sweat glands, especially when they have been diseased.
"Scurvy Past and Present" by Alfred Fabian Hess
Many follicles are produced, but many do not produce ova, and so gradually atrophy.
"Private Sex Advice to Women" by R. B. Armitage
Fruit a 1-celled follicle with 1-2 glands at its base.
"Woodland Gleanings" by Charles Tilt
The isolated follicles at this stage are formed by ingrowths of connective tissue cutting off fully formed follicles from a nest.
"The Works of Francis Maitland Balfour, Volume 1" by Francis Maitland Balfour
***

In poetry:

Tufts, follicles, grubstake
biennial rosettes, a low-
life beach-blond scruff of
couch grass: notwithstanding
the interglinting dregs
"Vacant Lot With Pokeweed" by Amy Clampitt

In news:

Japanese researchers have successfully grown hair on hairless mice by implanting follicles created from adult stem cells, they announced Wednesday, sparking new hopes of a cure for baldness .
An inability of stem cells in the scalp to develop into the type of cells that make hair follicles may be an underlying cause of male-pattern baldness , according to a new study.
Hair follicles are the culprits in this unfortunate turn of events.
"If you could release the hairs to grow more normally in the scalp, you'd let the hair follicles go on for a bit longer," he said.
Researchers Observe Hair Follicle Communication for Hair Growth.
At the moment of ovulation, 14 days before the onset of menstruation , the remaining follicle bursts and a mature egg emerges, leaving on the ovary a scar that turns into another gland, the corpus leuteum.
The difference is not in the number, but in the fineness of the hair that grows from those follicles.
For those men on the front lines in the battle over baldness, new studies have found that being follicle-challenged may be a boon in the business world.
We have no idea what the hell sort of impact sending tons of hair follicles to the NHL headquarters will have, but it's worth a shot.
So much can go wrong with skin, with glands, with hair follicles.
These fungi live on the surface of the skin and in the skin follicles … feeding on dead skin tissue and hair.
Heavily coating the lid margins with 2% mercuric oxide or other viscous ointments is also an effective approach that appears to inhibit the reproductive activity of the adult mites and cut off oxygen to mites trapped in hair follicles.
2011), I now know that the high variation in ovary size and the number of follicles and high quality oocytes in ovaries (referred to as ovarian reserve) impacts ovarian function and fertility.
You want your scalp to allow circulation to your hair follicles and be able to seal in moisture.
According to Day, chemicals such as fragrances, sprays and dyes are the scalp 's greatest threat, taking their toll on the sensitive, follicle-laden skin.
***