rolodex
UK[ˈrəʊləʊdɛks]US[ˈroʊləʊdɛks]
n
A rotating desktop file for storing business cards, contact information, or index cards, typically consisting of a circular tray with alphabetical dividers.
Etymology
The word 'Rolodex' is a modern portmanteau, originating as a trademarked brand name for a specific office product. It was coined in the 1950s by combining the words 'rolling' and 'index', perfectly describing its function as a rotating device for indexing information. The brand name became so ubiquitous for the product category that it entered common usage as a generic term. Its etymology is therefore not rooted in ancient languages but in mid-20th century American English marketing, illustrating how brand names can evolve into standard vocabulary.
Analysis
This is a proprietary name (trademark) formed by blending two English words. It is not composed of classical morphemes with distinct origins and functions.
Examples
She flipped through her well-worn Rolodex to find the client's number.
In the pre-digital era, a packed Rolodex was a symbol of a well-connected professional.
He carefully added the new business card to the appropriate section of his Rolodex.