Perovskite is a term used to refer to a specific mineral that has a unique crystal structure. Some possible synonyms for the word perovskite could be calcium titanium oxide, which is the chemical formula of the mineral. Other synonyms could be the names of other minerals that have similar crystal structures, such as NaTiO3 or LaAlO3. In the context of solar energy, perovskite also refers to a new class of materials that have shown great potential for use in solar cells. Some other possible synonyms for this use of the term include metal halide perovskites or hybrid perovskites.