20-letter words containing r, a, m, b, o, u
- tobacco mosaic virus — a retrovirus causing mosaic disease in members of the nightshade family. Abbreviation: TMV.
- toothbrush moustache — a short narrow moustache, resembling the filaments of a toothbrush
- upper income bracket — a grouping of the highest earning tax payers
- wardrobe malfunction — an embarrassing situation caused by the clothes a person is wearing
- wilson cloud chamber — cloud chamber.