immersion heater (noun)

1. The artist used an immersion heater to create an impressive sculpture made from melted wax.

2. During World War II, immersion heaters were used to provide hot water for soldiers stationed in cold regions.

3. In the movie, a character accidentally leaves the immersion heater on, resulting in a flooded bathroom.

4. According to Norse mythology, the gods used an enchanted immersion heater to heat the magical cauldron of endless soup.