Lookup refers to the act or instance of searching for information, typically in a reference book or an online database.
The term "lookup" is often used when someone retrieves data or seeks a specific fact from a resource.
“An act or instance of looking something up, as information in a reference book or an online database.”
This concise definition highlights "lookup" as the process of seeking information in various reference formats, emphasizing its use in both traditional and digital contexts.