dichroic

This term is primarily used in technical, scientific, and optical contexts. It describes a specific physical property of materials that selectively filter light based on wavelength, making it a precise term of art in physics and chemistry rather than a general descriptive word for "colorful" objects.

In practical application, it is most frequently paired with optical components like mirrors or filters. It differs from "iridescent" in that dichroism is often a result of specific material properties or structural engineering to control light transmission, whereas iridescence is a broader visual effect of shifting colors.