Tenacity: The tensile stress when expressed as force per unit linear density of the unstrained specimen (e.g., grams per tex or grams per denier.)

Tex: 1. A unit for expressing linear density, equal to the weight in grams of 1 kilometer of yarn, filament, fiber, or other textile strand. 2. The system of yarn numbering based on the use of tex units.

Textured: An adjective used to describe continuous filament man-made yarns (and woven and knit fabrics made therefrom) which have been crimped or have had random loops imparted, or which have been otherwise modified to create a different surface texture.

Textured Yarns: Yarns which develop stretch and bulk on subsequent processing. When woven or knitted into fabric, the cover, hand, and other aesthetics of the finished fabric better resemble the properties of a fabric constructed from spun yarn.

Texturing: The process of crimping, imparting random loops, or otherwise modifying continuous filament yarn to increase cover, resilience, abrasion resistance, warmth, insulation, and moisture absorption or to provide a different surface texture. Texturing methods can be placed roughly into six groups.

Thread: A slender, strong strand or cord, especially one designed for sewing or other needlework. Most threads are made by plying and twisting yarns. A wide variety of thread types is in use today, e.g., spun cotton and spun polyester, core-spun cotton with a polyester filament core, polyester or nylon filaments (often bonded), and monofilament threads. A general term for yarns used in weaving and knitting, as in "thread count" and "warp threads."

Throwing: The operation of doubling or twisting silk or man-made filament yarns.

Traverse Length: The lateral distance between the points of reversal of the wind on a yarn package.

Triacetate Fiber: A man-made fiber produced from cellulose triacetate in the forms of filament yarn, staple, and tow. Cellulose triacetate fiber differs from acetate fiber in that during its manufacture the cellulose is completely acetylated whereas regular acetate, which is diacetate, is only partially acetylated. Fabrics of triacetate have higher heat resistance than acetate fabrics and may be safely ironed a higher temperatures. Triacetate fabrics which have been properly heat-set (usually after dyeing) have improved ease-of-care characteristics because of a change in the crystalline structure of the fiber.

Tricot: A generic term for the most common type of warp-knit fabric. It has fine wales on the face and coursewise ribs on the back. It can be made in a plain jersey construction or in meshes, stripes, and many other designs. Tricot is usually made of nylon, acetate, polyester, or rayon.

Tricot Beam: A metal flanged beam, commonly 42 inches in width, on which yarn is wound for use as a supply for the tricot machine.

Tube: A cylindrical holder or bobbin used as a core for a cylindrical yarn package. A cylindrical yarn package.

Twist: The number of turns about its axis per unit of length of a yarn or other textile strand. Twist may be expressed as turns per inch (tpi), turns per meter (tpm), or turns per centimeter (tpcm). The direction of twist in yarns and other textile strands is indicated by the capital letters S and Z. The process of combining filaments into yarn by twisting them together or combining two or more parallel single yarns (spun or filament) into plied yarns or cords. A very high level of twist is added to single or plied yarns to make crepe yarns. The process of adding twist to a filament yarn to hold the filaments together for ease in subsequent textile processing, etc.