Extratropical Cyclone
Weather
A cyclone in the middle and high latitudes often being 2000 kilometers in diameter and usually containing a cold front that extends toward the equator for hundreds of kilometers.
Hurricane Weather
A cyclone of any intensity for which the primary energy source is baroclinic, that is, results from the temperature contrast between warm and cold air masses.
- — Glossary of National Hurricane Center Terms retrieved 2014-05-26