Meanings
nounMarquis reagent (countable and uncountable, plural Marquis reagents)
plural Marquis reagents
- countableuncountableA spot test used to identify various recreational drugs, etc.
Origin
Discovered in 1896 by the Russian (Estonian) pharmacologist Eduard Markus (Эдуард Маркус).
Full word history & related roots →Cite this entry
APA
Marquis reagent. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Marquis%20reagent
MLA
“Marquis reagent.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Marquis%20reagent. Accessed November 5, 2026.
Chicago
WatkinsX Dictionary, s.v. “Marquis reagent,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Marquis%20reagent.
Source: Marquis reagent on Wiktionary, CC BY-SA 4.0.