The term "columnar" refers to a structure or arrangement that is organized in vertical columns. This can be seen in various contexts, such as in architecture, where columns support buildings, or in data presentation, where information is displayed in vertical lists for clarity and ease of reading. In the context of data storage, "columnar" often describes a type of database that organizes data by columns rather than rows. This format can enhance performance for certain types of queries, making it easier to analyze large datasets efficiently, as seen in data analytics and business intelligence applications.