What is the meaning of subzero?

"Subzero" means below zero degrees, typically referring to a temperature scale like Celsius or Fahrenheit.

Here's a breakdown:

* Zero degrees: This is the starting point on a temperature scale.

* Subzero: Anything below zero degrees on that scale is considered subzero.

For example:

* -10 degrees Celsius is a subzero temperature.

* 10 degrees below zero Fahrenheit is also a subzero temperature.

The term "subzero" is often used to describe extremely cold temperatures, particularly in winter climates.