UPVC BrE AmE , uPVC /ˌjuː piː viː ˈsiː/ noun [uncountable]
(unplasticized polyvinyl chloride) a type of plastic, used especially to make window frames:
UPVC double-glazed windows
UPVC BrE AmE , uPVC /ˌjuː piː viː ˈsiː/ noun [uncountable]
(unplasticized polyvinyl chloride) a type of plastic, used especially to make window frames:
UPVC double-glazed windows
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012