[ rohl-oh-ver ]
/ ˈroʊlˌoʊ vər /
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an accident involving an overturned vehicle: The icy conditions resulted in several rollovers causing the westbound lanes of the highway to be closed for the morning commute.
Business. a reinvestment of funds, especially a tax-free transfer of assets from one retirement plan to another: My financial advisor suggested an IRA rollover for my old 401(k).
Digital Technology. a website feature that changes the appearance of a web page or creates the illusion of a pop-up when the specified target area on the page is clicked on or passed over by a mouse and pointer: Additional content is found in the rollovers, giving the page a crisp and clutter-free design.
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Origin of rollover

First recorded in 1815–20; noun use of verb phrase roll over
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use rollover in a sentence

British Dictionary definitions for rollover

roll over

verb (adverb)
(intr) to overturn
slang to surrender
(tr) to allow (a loan, prize, etc) to continue in force for a further period
noun rollover
  1. an instance of such continuance of a loan, prize, etc
  2. (as modifier)a rollover jackpot
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Idioms and Phrases with rollover

roll over

Reinvest profits from one investment back into that investment or into another, as in Our broker advised us to roll over the proceeds into a tax shelter. [Mid-1900s]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.