| Main Entry: | perfect storm |
| Part of Speech: | n |
| Definition: | a weather pattern involving the collision of a northeaster, a large high pressure system, and unusually cold Canadian air pushing down plus moisture and warm air pushing up from a hurricane to the south to create a 'once-in-a-lifetime' storm |
| Example: | A perfect storm is a weather phenomenon that develops maybe two or three times every century. |