What is the scientific name for the terrestrial cooling event sometimes referred to as the 'Big Freeze'?

Answer

Younger Dryas

Approximately 12,000 years ago, a period of rapid and extreme cooling in the Northern Hemisphere, following a long Ice Age, is known scientifically as the Younger Dryas.

What is the scientific name for the terrestrial cooling event sometimes referred to as the 'Big Freeze'?
freezepredictionYear