- adjective able to take on different shapes when under stress and not returning to its original shape when the stress is removed
- noun an artificial, usually organic, material made from petroleum and used to make many objects
- A solid material which can flow into a given desired shape through the application of heat and/or pressure. A plastic is ordinarily synthetic, and its chief constituent is usually a polymerized organic molecule, such as polyvinyl chloride. The two main classifications for plastics are thermosetting and thermoplastic. Plastics are electrical insulators, and have many applications in electronics, including their use in components such as capacitors, recording media such as floppy disks and optical disks, optical fibers, lenses, IC packages, in frames, as an encapsulant, and for tubing, among many others.
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