Lenticel, a term used in botany, is defined as a small raised spot on the surface of a stem or leaf, through which gases are exchanged between the plant and the environment. Synonyms for lenticel include aeropore, pneumathode, and stoma. Aeropore refers to the same opening on the surface of a plant used for gas exchange. Pneumathode is a specialized term for lenticels in aquatic plants that allow for the exchange of oxygen and carbon dioxide in submerged conditions. Stoma, on the other hand, refers to the more commonly known opening in a plant stem or leaf that controls the exchange of gases. These synonyms help to clarify the intricate and specific terminology used in the field of botany.