IPA: //ˈflʊəroʊˌkroʊm//
KK: /ˈflʊəroʊˌkroʊm/
A type of dye that glows under certain light, used to color biological samples for study.
The scientist used a fluorochrome to highlight the cells in the tissue sample.
Fluorochrome → It is formed from "fluoro-" (from Latin *fluere*, meaning to flow) and "chrome" (from Greek *chroma*, meaning color). The word refers to a substance that can emit light or color when exposed to certain wavelengths, thus 'flowing' in terms of light emission.
Think of 'flowing' light ('fluoro-') that creates a 'color' ('chrome') — that's what a fluorochrome does.