noun / proper noun
perspex
PUR-speks/ˈpɜrˌspɛks/
A clear acrylic plastic used as an alternative to glass, also sold under the trademark Perspex.
The clear perspex sheet leaves the colored object visible behind it.

Etymology
The “look through” image connects this trade name with the plastic's transparency. Like the glass it replaces, the material allows someone to see what is on the other side.
In context
cut this lip all the way around to give more surface area for gluing i've only ever cut plastic on my cnc router once before and it was the clear perspex type stuff
More examples
- The display case has clear perspex sides.
- We cut the perspex to fit the frame.
- The supplier sells acrylic panels under the Perspex trademark.
Similar words
- acrylic
- Names the broader plastic category rather than a particular trademark.
- Plexiglas
- An American trademark for the same type of acrylic plastic.