Note that a slide can dissolve to black or white. The technical term is fade-out. Fading out to black is also known as black-out, and similarly fading out to white is known as white-out. Using a combination of fading out and in, might help the speak force a well deserved pause:
This might also be known as cover. Read below to see why…
If the whote pause signaled weakly coupling, the push transition might indicate a strong connection between two slides:
This transition is the opposite of move-in. Reveal could also be called move-out, and move-in cover.