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What is "Wool" - Definition & Explanation

Fiber from sheep, goats, camels ;-), alpaca, llama, or other animals. Sheared wool comes from live animals. Pulled wool comes from pelts of slaughtered animals. Reused wool comes from worn clothing. Reprocessed wool comes from scraps of new fabric.
Usually associated with fiber or fabric made from the fleece of sheep or lamb. However, the term "wool" can also apply to all animal hair fibers, including the hair of the Cashmere or Angora goat or the specialty hair fibers of the camel, alpaca, llama, or vicuna. Commonly used in slacks and outerwear.
Fibers that grow on the sheep fleece. There are varieties of wool such as Alpaca, Angora, Botany, Cashmere, Merino and Shetland.
A protein fiber usually associated with fiber or fabric made from the fleece of sheep or lambs. However, the term 'wool' can also apply to all animal hair fibers, including the hair of the Cashmere or Angora goat or the specialty hair fibers of the camel, alpaca, llama, or vicuna. Wool is very resilient and resistant to wrinkling. It is renewed by moisture and well known for its warmth. It absorbs and releases moisture slowly, which allows excellent insulating capabilities and breathability. It can even hold 30% of its own weight without feeling damp.
Wool is the fiber derived from the hair of domesticated animals, usually sheep.
(Eco Wool) – Sheared from free range roaming sheep that have not been subjected to toxic flea dipping, and have not been treated with chemicals, dyes, or bleaches. Eco wool comes in natural tones of white, grey and black.
Wool-like - Refers to a non-wool fabric with a warm hand that feels like natural wool.
Wool fabric brings to mind cozy warmth. Some wools are scratchy giving some people the idea that they are "allergic" to wool. Although wool fiber comes from a variety of animal coats, not all wool’s are scratchy but rather extremely soft. The wool fibers have crimps or curls which create pockets and gives the wool a spongy feel and creates insulation for the wearer. The outside surface of the fiber consists of a series of serrated scales which overlap each other much like the scales of a fish. Wool is the only fiber with such serration’s which make it possible for the fibers to cling together and produce felt. The same serration’s will also cling together tightly when wool is improperly washed and shrinks! Wool will not only return to its original position after being stretched or creased, it will absorb up to 30% of its weight in moisture without feeling damp. Its unique properties allow shaping and tailoring, making the wool the most popular fabric for tailoring fine garments. Wool is also dirt resistant, flame resistant, and, in many weaves, resists wear and tearing.

Basically, there are two different processes used in wool production. Woolen fabrics have a soft feel and fuzzy surface, very little shine or sheen, will not hold a crease, and are heavier and bulkier than worsteds. Blankets, scarves, coating, and some fabrics are considered woolens. Worsted wool is smoother than woolen, takes shine more easily, does not sag, holds a crease well, is lighter and less bulky, and wears longer than woolen. Worsted wool’s require a greater number of processes, during which fibers are arranged parallel to each other. The smoother, harder-surface worsted yarns produce smoother fabrics with a minimum of fuzziness and nap. Fine worsted wool is even seen in clothing for athletics such as tennis. No, they are not hotter than polyester but actually cooler, as the weave of the fabric allows wool to absorb perspiration and the fabric "breathes," unlike polyester.

Made from sheep, most famous being Merino wool
a fabric made from the hair of sheep
fiber sheared from animals (such as sheep) and twisted into yarn for weaving
outer coat of especially sheep and yaks
Usually associated with fiber or fabric made from the fleece of sheep or lamb. However, the term "wool" can also apply to all animal hair fibers, including the hair of the Cashmere or Angora goat or the specialty hair fibers of the camel, alpaca, llama, or vicuna.

Some other terms

Some more terms:

A manufactured assembly of fibres or yarns (or both) that has substantial surface area in relation to its thickness, and sufficient mechanical strength to give the assembly inherent...
A hydrophilic compound applied to a fiber or fabric which results in superior breathability and a moisture management system within the fabric that helps to maintain a comfortable body temperature...
A long crease mark (q.v.) in a dyed or finished textile and that runs approximately in the length direction. NOTE: The marks are caused during wet processing in the rope form and may be the result...
A fabric made in a double knit construction, usually produced in one color rather than color patterns. This plain fabric has an elastic quality with a slight horizontal line. The fabric looks the...
A type of fiber dyeing in which colored pigments are injected into the spinning solution prior to the extrusion of the fiber through the spinneret. Fibers and yarns colored in this manner are...

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