What is another word for cyanine dye?
Pronunciation: [sˈa͡ɪɐnˌa͡ɪn dˈa͡ɪ] (IPA) 
Cyanine dye refers to a group of synthetic organic compounds commonly used as fluorescent dyes. Also known as polymethine dyes, these compounds possess high absorbance properties, making them useful in a range of biomedical, chemical, and industrial applications. Several synonyms for cyanine dye exist, including polychromatic dye, heterocyclic fluorescent dye, and polymethine chromophore. Other related compounds with similar properties include merocyanine dyes, quinolinium dyes, and styryl dyes. While their structures may differ slightly, all cyanine dyes share a central chromophore containing alternating single and double bonds, which contributes to their highly conjugated electronic system and unique light absorption and emission properties.
