Noun
a polymer of styrene; a rigid transparent thermoplastic
Source: WordNetEngland's not a bad country. It's just a mean, cold, ugly, divided, tired, clapped-out, post-imperial, post-industrial slag-heap covered in polystyrene hamburger cartons. Margaret Drabble
expanded polystyrene looks like a rigid white foam and is used as packing or insulation Source: Internet
And then a whole new material – polystyrene foam – arrived on the scene. Source: Internet
At an early growth stage when colonies consist of only a few cells, sterile polystyrene rings (cloning rings), which have been dipped in grease, are placed over an individual colony and a small amount of trypsin is added. Source: Internet
A good example is polystyrene (PS). Source: Internet
Constructing scenery involves preparing a sub-terrain using a wide variety of building materials, including (but not limited to) screen wire, a lattice of cardboard strips, or carved stacks of expanded polystyrene (styrofoam) sheets. Source: Internet