SST has multiple full forms depending on the context. Here are the different full forms of SST:

• Social Studies: In the Indian educational system, SST stands for Social Studies. It is a subject that includes various fields of social sciences and humanities such as history, geography, political science, economics, and cultural understanding.

• Sea Surface Temperature: SST stands for Sea Surface Temperature, which refers to the temperature of the water immediately below the oceans surface. It is often used in the context of oceanography and climate studies.

Therefore, the full form of SST depends on the context in which it is used.