What does catalog mean?
A catalog is a systematically organized list of items — books, products, artworks, courses, or nearly anything else — usually accompanied by brief descriptive information that helps the reader locate or evaluate each entry. The noun covers everything from a library's card catalog to a mail-order catalog of clothing, while as a verb, to catalog means to compile such a list or to record items within one, a task central to librarianship, retail, and archival work. The word carries a neutral, practical connotation: it suggests order, thoroughness, and accessibility rather than emotion. Spelled 'catalog' in American English and more commonly 'catalogue' in British English, it derives from the Greek katalegein, meaning to recount or list. In modern usage the term extends naturally to digital contexts, as in an online catalog or streaming platform's content catalog.
A complete list of items, typically arranged systematically and often with descriptive details.
"The university library's catalog lists every book in its holdings."
To make a systematic list of; to enter items in a catalog or classified record.
"Volunteers worked for years to catalog the archive's photographs."
Inflected forms take -ing/-ed spellings in American usage (cataloging) versus British (cataloguing).
British spelling uses 'catalogues'.
"The bookstore displayed several fall catalogs at the front counter."
The word catalog traces back to the Greek 'katalegein' — literally 'to count down' or 'recount' — making every catalog you've ever flipped through a descendant of ancient Greek bookkeeping.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of catalog
Catalog comes from the Greek katalogos, meaning 'a list or register', derived from katalegein — 'to count down' or 'to recount' — formed from kata ('down') plus legein ('to gather, tell, count'). The word passed into Latin as catalogus before entering English via French in the late Middle Ages or early modern period. It shares its root legein with words like dialogue, prologue, and epilogue.
Related word forms
How catalog is actually used
In American English, 'catalog' is the standard spelling for both noun and verb; 'catalogue' predominates in British English, though 'catalog' is increasingly accepted there too. The verb form is common in professional and academic contexts, especially librarianship and archiving.
Easily confused with catalog
Catalogue is simply the British spelling of the same word; catalog is the standard American spelling.