The term for the process by which a caterpillar becomes a butterfly is "metamorphosis." This biological process involves several stages: the egg, larva (caterpillar), pupa (chrysalis), and adult (butterfly). During metamorphosis, the caterpillar undergoes significant changes. After feeding and growing, it forms a chrysalis where it undergoes transformation. Inside, its body is rearranged to develop wings and other adult structures. This process can take several days to weeks, depending on the species and environmental conditions. The stunning transformation from a crawling caterpillar into a flying butterfly serves as a powerful symbol of change and growth in various cultures and ecosystems.