ultrapermanent

English

Etymology

From ultra- +‎ permanent.

Adjective

ultrapermanent (comparative more ultrapermanent, superlative most ultrapermanent)

1. Of great permanence; very long-lasting.
   • 2008 June 27, Billie Cohen, “Water, Soap and Open Air”, in New York Times‎:

     PVC, the hard plastic polymer polyvinyl chloride, “is not a long-term, ultrapermanent material,” he said.