valinomycin
[ val-uh-noh-mahy-sin ]
/ ˌvæl ə noʊˈmaɪ sɪn /
noun Pharmacology.
a cyclic, peptide antibiotic, C54H90N6O18, produced by the bacterium Streptomyces fulvissimus; used experimentally to transport potassium across membranes.