The particle 도 is one of the most common particles in Korean. It usually means also, too, or as well, but in certain contexts it can also mean even. Unlike 은/는, 이/가, or 을/를, 도 replaces the particle that would normally come after the noun. Usage: Attach 도 to a noun to mean also, too, or as well.

In Korea, when discussing temperature, 섭씨 (Celsius) is almost always used, and it’s common to refer to temperatures using "도" (degrees).