rhodamine
noun
rho·da·mine ˈrō-də-ˌmēn 
often capitalized
: any of a group of yellowish-red to blue fluorescent dyes
especially : a brilliant bluish-red dye made by fusing an amino derivative of phenol with phthalic anhydride and used especially in coloring paper and as a biological stain
Example Sentences
Recent Examples on the Web The dye is nontoxic rhodamine that is safe for use in drinking water and salt water. 
Kristina Davis, San Diego Union-Tribune, 3 Dec. 2021 In the photos on this page, researchers with David Kaplan’s Watershed Ecology Lab at the University of Florida used non-toxic rhodamine WT fluorescent dye as a tracer. Jennifer Adler, National Geographic, 29 Mar. 2017 In the photos on this page, researchers with David Kaplan’s Watershed Ecology Lab at the University of Florida used non-toxic rhodamine WT fluorescent dye as a tracer. Jennifer Adler, National Geographic, 29 Mar. 2017
Kristina Davis, San Diego Union-Tribune, 3 Dec. 2021 In the photos on this page, researchers with David Kaplan’s Watershed Ecology Lab at the University of Florida used non-toxic rhodamine WT fluorescent dye as a tracer. Jennifer Adler, National Geographic, 29 Mar. 2017 In the photos on this page, researchers with David Kaplan’s Watershed Ecology Lab at the University of Florida used non-toxic rhodamine WT fluorescent dye as a tracer. Jennifer Adler, National Geographic, 29 Mar. 2017 Word History
Etymology
borrowed from German Rhodamin, from rhod- rhod- + Amin amine
First Known Use
1888, in the meaning defined above
Medical Definition
rhodamine
noun
rho·da·mine ˈrōd-ə-ˌmēn
: any of a group of yellowish red to blue fluorescent dyes
especially : rhodamine b
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