polystyrene
part of speech
noun (polystyrene — uncountable)
meaning for a pupil
1) Polystyrene is a light plastic. The common white kind is full of air bubbles and is used for packaging, cups and food boxes. tree →
2) Hard clear polystyrene is used for things like plastic cutlery and CD cases. tree →
sense in the lessons
In science lessons it is an insulator that keeps heat in or out and floats; in environment lessons it is hard to recycle and pollutes seas. Phrases: polystyrene cup, polystyrene packaging, polystyrene balls.
examples
- The TV came packed in polystyrene. tree →
- A polystyrene cup keeps the tea hot. tree →
- Polystyrene is very light and floats on water. tree →
- We used polystyrene balls to make model planets. tree →
- Polystyrene is hard to recycle. tree →
- Bits of polystyrene were washed up on the beach. tree →
note
Uncountable. In the USA the foam is often called «Styrofoam», which is a brand name. Say pol-ee-STY-reen. A good thermal insulator but bad for the environment.
Trees and pragmatics
Every meaning and example of «polystyrene» parsed by Mova, each sentence with its dependency tree and frames.