uncoupler
noun
un·cou·pler
| \ ˈən-ˈkəp-(ə-)lər
\
\
Medical Definition of uncoupler
: an agent that dissociates two integrated series of chemical reactions
especially
: one that prevents the formation of ATP in oxidative phosphorylation in mitochondria by dissociating the reactions of phosphorylation from those concerned with electron transport and oxidation