<p><strong>Noun:</strong></p><ul><li>Meteorology: A tropical cyclone in the western Pacific Ocean or northern Indian Ocean, having sustained winds of at least 64 knots (74 miles per hour, 33 meters per second). Typhoons form in waters with surface temperatures of about 80°F (27°C), intensifying as temperatures rise. Compare hurricane (def 1).</li><li>Military: A single-engine British ground attack aircraft of World War II.</li><li>NATO's name for a class of nuclear-powered Soviet ballistic missile submarine carrying 20 multiwarhead missiles.</li></ul>