"PROC LIB", short for 'procedure library', refers to a set of procedures and functions in SAS software that provide ready-made analytical tools for data manipulation and analysis. While there are no direct synonyms for "PROC LIB", alternative phrases can describe similar concepts. The terms "data libraries" or "data sets" can be used to refer to collections of datasets stored in computer systems, akin to the libraries managed by PROC LIB. Additionally, related terms like "procedures" or "analysis tools" can be used to describe the functionality provided by PROC LIB, though they do not directly mirror its comprehensive suite of features. Overall, "PROC LIB" remains a unique term within the context of SAS software.