Domatium refers to a specialized structure in some plant species that provides shelter and nutrition to mutualistic organisms like mites, ants, and fungi. Synonyms for this term include "housing chamber," "nesting site," "gall-like structure," "myrmecode," and "ant-house." The concept of domatia is fascinating because it reflects the intricate interdependencies that exist in nature, with different organisms evolving to coexist and benefit from each other's presence. These structures vary in appearance and function, but they all share the same purpose of creating a safe haven for the organisms that inhabit them. The study of domatia raises important questions about the evolution of symbiosis and the role it plays in shaping ecological communities.