Millon's reagent

noun
Mil·​lon's reagent | \ mē-ˈlōnz- How to pronounce Millon's reagent (audio) \
variants: or Millon reagent \ mē-​ˈlōn-​ How to pronounce Millon reagent (audio) \

Medical Definition of Millon's reagent

: a solution that is usually made by dissolving mercury in concentrated nitric acid and diluting with water and that when heated with phenolic compounds gives a red coloration used as a test especially for tyrosine and proteins containing tyrosine