| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| the offspring of a zebra and a donkey. |
| Watson-Watt (wŏt'sən-wŏt') Pronunciation Key
British physicist who pioneered the development of radar. In 1919 he produced a system for locating thunderstorms by tracking their radio emissions. In the 1930s Watson-Watt led the team that developed radar into a practical system for locating aircraft. |