plastic (plăsītĭk)
(noun)
1. Any of various organic compounds produced by polymerization, capable of being molded, extruded, cast, or drawn into filaments.
(adjective)
2. Having the qualities of sculpture; well-formed.
3. Capable of being shaped or formed; see malleable.
4. Easily influenced; impressionable.
5. (Physics) Capable of undergoing continuous deformation without rupture or relaxation.
6. (Biology) Capable of building tissue; formative.
7. Marked by artificiality or superficiality; synthetic.