👉 Pseudalveolar is a medical term that refers to a type of lung tissue in which the alveoli (small air sacs) are not properly functioning. It can also refer to a disease where the lungs do not properly function due to an abnormality or condition, such as asthma or chronic obstructive pulmonary disease (COPD). The specific definition and cause of pseudalveolar lung tissue can vary widely depending on the context and medical history of the individual.