| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Extruded polystyrene | Energy | A type of insulation material with fine, closed cells, containing a mixture of air and refrigerant gas. This insulation has a high R-value, good moisture resistance, and high structural strength compared to other rigid insulation materials. (references) | |
Source: compiled by the editor from various references; see credits. | Top | ||
