What is the origin of 'sleep tight'?
Read moreOne of the mysteries of the English language finally explained.
Definition of supercyclone in US English:
supercyclone
noun
An extremely powerful cyclone; (Meteorology) a tropical cyclone with sustained wind speeds in excess of 130 knots (240 km per hour) in the region of the Arabian Sea, Indian Ocean, and Bay of Bengal.
Origin
1940s; earliest use found in Roger Tory Peterson (b. 1908).
