https://en.wikipedia.org/wiki/Spacing_effect
it's not a new term
The spacing effect is utilized by spaced repetition.
There isn't an "everyone else." Education research has silos, with different jargon for the same thing, and different definitions for the same words.
Here's another one at you: graduated interval recall
Close enough to the same thing. Different words. Plus, you have a bunch of related vocabulary, like forgetting curves.
One of the best articles I have read on this is by Michael Nielsen: http://augmentingcognition.com/ltm.html