- being or having been enlarged or extended.；denoting materials which have a light cellular structure
- 1. being or having been enlarged or extended.
- ▪ denoting materials which have a light cellular structure expanded polystyrene
- ▪ denoting sheet metal slit and stretched into a mesh, used to reinforce concrete and other brittle materials the curved soffit is finished with a strip of expanded metal mesh
- ▪ relatively broad in shape the expanded fins of the ray