|inclined to silence; reserved in speech; reluctant to join in conversation.|
|easily provoked to anger; very irritable:|
|plastic (ˈplæstɪk, ˈplɑːs-)|
|1.||Compare resin any one of a large number of synthetic usually organic materials that have a polymeric structure and can be moulded when soft and then set, esp such a material in a finished state containing plasticizer, stabilizer, filler, pigments, etc. Plastics are classified as thermosetting (such as Bakelite) or thermoplastic (such as PVC) and are used in the manufacture of many articles and in coatings, artificial fibres, etc|
|2.||short for plastic money|
|3.||made of plastic|
|4.||easily influenced; impressionable: the plastic minds of children|
|5.||capable of being moulded or formed|
|a. of or relating to moulding or modelling: the plastic arts|
|b. produced or apparently produced by moulding: the plastic draperies of Giotto's figures|
|7.||having the power to form or influence: the plastic forces of the imagination|
|8.||biology of or relating to any formative process; able to change, develop, or grow: plastic tissues|
|9.||of or relating to plastic surgery|
|10.||slang superficially attractive yet unoriginal or artificial: plastic food|
|[C17: from Latin plasticus relating to moulding, from Greek plastikos, from plassein to form]|
|—adj combining form|
|growing or forming: neoplastic|
|[from Greek plastikos; see |
plastic plas·tic (plās'tĭk)
Capable of being shaped or formed.
Easily influenced; impressionable.
Capable of building tissue; formative.
Forming; growing; changing; developing: neoplastic.
|plastic (plās'tĭk) Pronunciation Key
Noun Any of numerous substances that can be shaped and molded when subjected to heat or pressure. Plastics are easily shaped because they consist of long-chain molecules known as polymers, which do not break apart when flexed. Plastics are usually artificial resins but can also be natural substances, as in certain cellular derivatives and shellac. Plastics can be pressed into thin layers, formed into objects, or drawn into fibers for use in textiles. Most do not conduct electricity well, are low in density, and are often very tough. Polyvinyl chloride, methyl methacrylate, and polystyrene are plastics. See more at thermoplastic, thermosetting.
Adjective Capable of being molded or formed into a shape.