IPA: //ˌpæŋkrəˈmætɪk//
KK: /ˌpæŋkrəˈmætɪk/
Relating to or sensitive to all colors of light in the visible spectrum.
The photographer used panchromatic film to capture the full range of colors in the scene.
Panchromatic → It is formed from "pan-" (meaning all) and "chroma" (from Greek "chroma", meaning color). The word "panchromatic" refers to sensitivity to all colors, as it combines the idea of encompassing all colors in its definition.
Think of 'pan-' meaning all and 'chroma' meaning color — so panchromatic means sensitive to all colors.