roll-over

Noun

rollover (countable and uncountable, plural rollovers)

1. The process of incrementing, especially back to an initial value.
   • For Donkey Kong, the rollover on board 117 causes a “kill screen”—Mario is simply not given enough time to complete the level before time runs out.2011, Jeff Ryan, Super Mario: How Nintendo Conquered America
2. A road traffic accident in which a vehicle overturns.
   • “They blink if I step on the brake at the same time, and anybody who don't step on his brakes when he's makin^([sic]) a turn is lookin^([sic]) to do a rollover.”1980, Stephen King, Big Wheels: A Tale of the Laundry Game
3. A graphic element that changes its appearance when the cursor moves over it.
   • Your Web site doesn't have to be full of the latest dropdowns, rollovers, superslick graphics, or Flash videos.2007, Ray Foley, Heather Dismore, Running a Bar for Dummies, page 273
4. A keyboard feature where each key is scanned independently, so that multiple simultaneous keypresses always register correctly.
5. The sudden ignition of flammable gases (produced by pyrolysis in an oxygen-poor environment) near the ceiling of a room or other enclosed space.

   Synonyms:

   flameover

6. The reinvestment of funds in a new issue of the same or similar investment.

See all 10 meanings of rollover