Searing from Wiki

Searing (or pan searing) is a technique used in grilling, roasting, braising, sautéing, etc. that cooks the surface of the food (usually meat, poultry or fish) at high temperature so that a caramelized crust forms. A similar technique, browning, is typically used to sear or brown all sides of a particular piece of meat, fish, poultry, etc. before finishing it in the oven. To obtain the desired brown crust, the meat surface must exceed 300 °F (150 °C), so searing requires the meat surface be free of water, which boils at around 212 °F (100 °C).[1]