broad-leaved montia: succulent plant with mostly basal leaves; stem bears 1 pair of broadly ovate or heart-shaped leaves and a loose raceme of 3-10 white flowers; western North America
indian lettuce: a plant of the genus Montia having edible pleasant-tasting leaves
polonium: a radioactive metallic element that is similar to tellurium and bismuth; occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor