It depends who you talk to. Besides the example above, it can also apply to homozygous version of dominant gene, but some don't use it that way. Then some would consider allelic combos (morphs in the same complex) super and some people don't, which those are heterozygous combos, not homozygous.
You will get along with most people if you use it in the sense that it is an animal that when bred, produces nothing but that morph. Super banana produces all bananas, super pastel producesall pastels. It's what makes them super right?