Alveolation refers to the formation of small, hollow cavities within a structure. Synonyms for this term include alveolus formation, alveolarization, alveolization, alveolus creation, and alveolus development. The process of alveolation can occur in various organ systems within the human body, such as the lungs and the kidneys. In the lungs, alveolation is an essential process that allows oxygen to diffuse into the blood stream and carbon dioxide to diffuse out. Understanding the synonyms for alveolation can help researchers and healthcare professionals communicate more effectively while discussing these complex biological processes.