This is the 18000th most frequent Polish word.
światłouotwardzalne
"Światłoutwardzalne" means "light-curable" or "hardened by light."
Here, "światłoutwardzalne" is an adjective describing the resins, indicating that they cure or harden when exposed to light.
Światłoutwardzalne żywice są stosowane w stomatologii.
Light-curable resins are used in dentistry.
In this sentence, "światłoutwardzalnymi" is used as an adjective in the instrumental case, modifying "materials" to describe their capability to harden in response to light.
Na lekcji chemii uczniowie eksperymentowali z światłoutwardzalnymi materiałami.
In the chemistry class, students experimented with light-curable materials.
Here, "światłoutwardzalnych" is an adjective in the genitive plural form, describing "paints," indicating the property of being curable by light.