20-letter words containing s, o, b, r, i
- tobacco mosaic virus — a retrovirus causing mosaic disease in members of the nightshade family. Abbreviation: TMV.
- tropical disturbance — a very weak, or incipient, tropical cyclone.
- webster's dictionary — Informal. a dictionary of the English language, especially American English, such as Dictionary.com.
- wilson cloud chamber — cloud chamber.