Oiled wool

Unscoured or undyed knitting wool or wool dyed before spinning and containing added oil not subsequently removed.

Oilproof

A term describing fabrics that are impervious to oil.

Olefin (fibre) (generic name U.S.A.)

A manufactured fibre in which the fibre-forming substance is any long-chain synthetic polymer composed of at least 85% by mass of ethene (ethylene), propene (propylene), or other olefin units. The term includes the ISO generic names: polypropylene and polyethylene. (See alsoClassification Table, p.401.)
Note.. The FTC generic name (U.S.A.) olefin excludes amorphous polyolefins listed under rubber 1.

Olefin Fiber

A manufactured fiber in which the fiber-forming substance is any long chain synthetic polymer composed of at least 85% by weight of ethylene propylene or other olefin units. Olefin fibers combine lightweight with high strength and abrasion resistance and are currently being used in rope indoor-outdoor carpets and lawn furniture upholstery. (Also see POLYETHYLENE FIBER and POLYPROPYLENE FIBER.)

Oleophilic

A term describing a substance that has a strong affinity for oils.

Oleophobic

A term describing a substance that does not have a strong affinity for oils.

Oligomer

A polymer containing a small number of repeating units.
Note.. The oligomer most frequently encountered in the textile industry is the cyclic trimer of ethylene terephthalate, which is the repeating unit of the polymer used for the most important of the polyester fibres. This material can form undesirable deposits during the physical processing and dyeing of yarils and fabrics.

Ombr'e

A French term meaning shaded. It is used in relation to textiles:
(i) as an adjective to describe fabrics with a dyed, printed, or woven design in which the colour is graduated from light to dark and often into stripes of varying shades; and
(ii) as a noun, ineaning
(a) a shaded design or
(b) a fabric with a shaded design.

Ombré

A color effect in which the shade is changeable from light to dark generally produced by using warp yarns of different tones. Ombré effects may also be produced by printing.

On-call cotton

Raw cotton purchased under a procedure whereby the price (points on or off futures) is agreed between buyer and seller, but the actual futures price is left to be fixed withiii a stipulated period. The buyer has the right to 'call' (i.e., demand fixation of the futures price) at any time within the stipulated period.

On-Stream

The state of having been brought into production. The term is usually used for chemical and metallurgical plants or processes.

Ond'e

A thick, cord bengaline in which every cord is crinkled.

Ondul'e

A fabric having a wavy effect in the warp direction produced by an ondul'e reed that moves up and down during the weaving of a series of picks.

Ondul'e reed

A special reed that has groups of dents spaced i-nore widely at the top and more closely at the base and

Ondule

A general term for plain-weave fabrics of silk cotton or manufactured fiber having a wavy effect produced by weaving the warp or filling but usually the filling in a wavy line. An ondule reed is generally used to produce this effect often in a leno weave to emphasize the wave. Ondule is used for dress fabrics.