Glossary Definitions for Words beginning with "O"
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- Olefin
- A strong stain and fade resistant fiber made from a synthetic polymer consisting of ethylene, propylene, or other olefin units.
- Ombre
- Soft gradations of one color blending into another.
- Oil Paint
- Powdered pigment mixed to a thick consistency with linseed, poppy or nut oil which remains wet for long periods. Gradual oxidization causes the paint to harden and a full cure can take many months.
- Opacity
- The level of opaqueness of a paint.
- Opaque
- Any paint that is not transparent or translucent. It completely covers fabric and other paints.
- Optical Color Mixing
- An optical illusion produced when small amounts of two different colors are put next to each other, appearing to create a different color.
- Optical Whiteners
- After scouring and bleaching, Optical Brightening Agents (OBA), are applied to make the textile material to appear more brilliant whites. These OBA are available in different tints such as blue, violet and red.
- Overdyeing
- A dyeing technique used to change a color by re-dyeing it a new shade. The over-dyed shade is always darker than the original color and is altered by the original color.
- Oxford
- A group of cotton fabrics, including pinpoint, made with a modified plain or basket weave. Used primarily for shirting.
- Oxgall
- Used in marbling as an agent that helps the paints float on the surface of the solution. It is made from an animal product and some books recommend it. An excellent alternative is Versatex Dispersant or Jacquard's Synthetic Gall.
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