17-letter words containing a, l, s, t, o
- valence electrons — an electron of an atom, located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom.
- veiltail goldfish — an artificially bred, indoor variety of goldfish, usually golden or calico and of a spheroid shape, having a fully divided, drooping tail fin exceeding the body in length.
- ventilation shaft — a shaft in a mine, tunnel, or building used for providing ventilation or fresh air
- visible radiation — electromagnetic radiation that causes the sensation of sight; light. It has wavelengths between about 380 and 780 nanometres
- visitors' gallery — a balcony in a building such as a parliament or court where members of the public can sit
- vocational school — a school offering instruction in one or more skilled or semiskilled trades or occupations.
- wallowa mountains — a mountain range in NE Oregon. Highest peak, Sacajawea Peak, 9838 feet (2999 meters).
- wang laboratories — (body) Computer manufacturer, known for their office automation products and the Wang PC. Quarterly sales $208M, profits $3M (Aug 1994).
- washington island — an island off the Door Peninsula, NE Wisconsin, in NW Lake Michigan. 20 sq. mi. (50 sq. km).
- well-demonstrated — to make evident or establish by arguments or reasoning; prove: to demonstrate a philosophical principle.
- welsh nationalism — the political belief that Wales should be independent
- welsh nationalist — a person who believes that Wales should be independent
- welshman's button — an angler's name for a species of caddis fly, Sericostoma personatum
- white-nationalism — white supremacy.
- wild sweet potato — man-of-the-earth.
- wireless operator — a radio operator
- yellowstone falls — a waterfall in NW Wyoming, in Yellowstone National Park on the Yellowstone River
- zebra swallowtail — a swallowtail butterfly, Papilio marcellus, having black and greenish-white stripes on the wings.
- zola technologies — (company) Producers of the Z simulation language.