23-letter words containing b, e, o, n, t, a
- trans-siberian railroad — a railroad traversing Siberia, from Chelyabinsk in the Ural Mountains to Vladivostok: constructed by the Russian government 1891–1916. over 4000 miles (6440 km) long.
- unincorporated business — a privately owned business, often owned by one person who has unlimited liability as the business is not legally registered as a company
- united states of brazil — former official name of Brazil.
- urban conservation area — an urban area that is protected, preserved and carefully managed
- variable contrast paper — printing paper in which the contrast of the image is controlled by the color of the printing light.
- vestibulocochlear nerve — either one of the eight pairs of cranial nerves that supply the cochlea and semicircular canals of the internal ear and contribute to the sense of hearing