IPA: /pɪrˈlɛs.ənt/
KK: /ˈpɪr.lɛs.ənt/
Describing a surface that has a shiny, iridescent quality similar to that of a pearl.
The walls of the room were painted in a pearlescent shade that changed color with the light.
Pearlescent is formed from "pearl" (from Old French *perle*, meaning a precious gem formed within a mollusk) and "-escent" (from Latin *escentem*, meaning becoming or having the quality of). The word describes something that has the quality or appearance of a pearl, often with a lustrous, iridescent sheen.
Think of a 'pearl' as a precious gem that has a beautiful shine, and remember that 'pearly' things have a similar lustrous quality.