Plastic
(noun) A synthetic material made from a wide range of organic polymers, that can be molded into shape while soft and then set into a rigid or slightly elastic form; (adjective) Easily molded or shaped.
As a noun, 'plastic' refers to a broad category of synthetic polymeric materials. As an adjective, it describes malleability, which is the defining characteristic of these materials during their formation.
Word relationships
- polymer: Plastic is a type of polymer (specifically, a synthetic one); 'polymer' is a broader scientific term.
- malleable: (adjective) Easily shaped or molded, often referring to metals.
- pliable: (adjective) Easily bent or flexible.
- rigid: (adjective) Stiff and unyielding.
- brittle: (adjective) Hard but easily broken.
Commonly confused with
- Rubber: Rubber is an elastomer, known for its elasticity; plastic is generally more rigid or semi-rigid once set, though some plastics can be flexible.
Word family
- plasticity (noun): the quality of being easily shaped or molded
- plasticize (verb): to make plastic or pliable
Collocations
- plastic bottle
- plastic bag
- plastic surgery
- recycled plastic
- plastic waste
Idioms & expressions
- plastic money (credit cards)
Example sentences
- "The ocean is increasingly polluted with plastic bags and bottles." Single-use plastics are a major environmental concern due to their persistence in ecosystems.
- "Engineers are constantly developing new types of plastic with enhanced strength and durability." Many modern products, from car parts to medical devices, are made from various types of plastic.
- "The material was highly plastic, allowing for intricate detailing and complex forms." The sculptor worked with clay, appreciating its plastic qualities.
Memory hook
Think of 'PLAS-ter' (a material you mold) and 'PLAS-tic' (a material that can be molded). Moldable material.
When not to use
Do not use 'plastic' to refer to natural polymers like rubber or cellulose unless they have been chemically modified into a plastic-like state. Avoid using it as a general synonym for 'polymer' as it's a specific type.
Fun facts
- The first fully synthetic plastic, Bakelite, was invented in 1907 by Leo Baekeland.
- The versatility of plastics comes from the ability to tailor the properties of polymers by varying their monomers, chain lengths, and additives.
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