: a basic dye used chiefly as a biological stain and acid-base indicator
Example Sentences
Recent Examples on the WebThe white walls and the rooftop’s neutral red brick open wide possibilities for your preassembled dream team, but don’t be shy about asking for vendor suggestions, either. David Walters, The Cut, 13 Apr. 2018
Word History
First Known Use
1890, in the meaning defined above
Medical Definition
neutral red
noun
: a basic phenazine dye used chiefly as a biological stain and acid-base indicator