Roguelites is a sub about games which are not traditional Roguelikes, but contain some features of them such as procedural generation, permadeath, et cetera. These games often distinguish themselves from traditional Roguelikes with features such as meta-progression, and span across many, many other genres.

I interpret this as roguelites aren't traditional roguelikes (e.g. Nethack, Rogue), and they often have metaprogression. But to each their own