(photography) Any of the discrete steps or stopping points for adjusting the aperture of a lens, either marked on a ring on the lens and adjusted by rotating that ring or marked in the display of a digital camera and adjusted by buttons or touch-sensitive controls.

Alternative spelling of f-stop

plural of stop sign

plural of stop-gap

(photography) To decrease the aperture of a photographic lens, moving from an f/stop represented by a lower number to an f/stop represented by a higher number.

A very brief halt in a vehicle

Alternative spelling of heartstopping

(cricket) A fielding position, now confined to the amateur game, behind the wicket-keeper (so as to retrieve balls that the wicket-keeper misses); a fielder in this position

plural of stopping distance

The distance that is the sum of the thinking distance and the braking distance.