Search for "María Moliner Diccionario de uso" to see significant portions of the text. Archive.org: Search the Internet Archive

María Moliner was a Spanish librarian and lexicographer. She dedicated over fifteen years to creating her dictionary single-handedly from her home.

Check your local or university library for digital access to the Gredos database Print Edition: The physical 4th edition (2016)

Search the term in Google Scholar. Sometimes, academics have uploaded "comparative studies" that contain large appendices of Moliner's definitions.

If you are at a university, check your library portal. Many academic libraries have access to the of the Diccionario de uso del español . This is a web-based interface that functions like a PDF but is searchable, hyperlinked, and constantly updated.