The term “India” does not have a full form as it is the name of a country. The name “India” is derived from the River Indus, which was historically important to the region. The name has its roots in the Sanskrit word “Sindhu,” which referred to the Indus River. Over time, the Greeks and Persians referred to the region around the Indus as “India.”
If you’re looking for an acronym or a specific phrase that uses the letters in “India,” it might be a creative or informal interpretation, but there is no officially recognized full form for “India.”