Peegeldav
Peegeldav is an Estonian adjective and present participle derived from the verb peegeldama, meaning "to reflect". It literally describes something that reflects light, sound, images or other forms of radiation, and is commonly applied to surfaces, materials and phenomena that return or scatter energy back toward a source or into the environment.
Etymology traces to peegel ("mirror") with the verb-forming suffix -dama and the participial/adjectival suffix -v, producing
In scientific contexts peegeldav is used to describe optical properties such as high reflectance or specular
In everyday language peegeldav is applied to clothing and safety gear with retroreflective elements, to artistic