Yes, a lemon is a berry. Botanically speaking, a lemon is classified as a berry, specifically a type called a hesperidium. A hesperidium is a berry with a thick rind and a juicy interior divided into segments. This definition is supported by the statement: "The fruit of citrus, such as the orange, kumquat and lemon, is a berry with a thick rind and a very juicy interior divided into segments by septa, that is given the special name "hesperidium".
While the common understanding of a berry might differ from the botanical definition, the scientific classification remains consistent. Many culinary uses of lemons alongside other berries (as seen in various recipes and product names such as "Lemon-Blueberry Dutch Baby," "Smirnoff Sour Berry Lemon," and "Lemon Berry Bundt Cake") further illustrate this botanical classification. The Wikipedia definition of a berry ("In botany, a berry is a fleshy fruit without a stone (pit) produced from a single flower containing one ovary." ) also supports this categorization, as lemons fit this description.
Therefore, despite popular perception, the botanical classification clearly indicates that lemons are indeed a type of berry.
