noun
structural color
Technical term in physics and biology for color produced by microscopic structures that interfere with light, rather than by pigments. Common in descriptions of butterfly wings, bird feathers, and certain minerals.
モルフォチョウの羽の鮮やかな青は構造色によるものだ。
The vivid blue of the morpho butterfly's wings is due to structural color.
この鉱物の虹色
The iridescent sheen of this mineral is an example of structural color.