"That's not a term I recognize." Vegeta answers in regards to the 'Terran', but that doesn't mean much considering the different universes and how big they tend to be, even if he feels he's got a pretty good grasp on the different ones from his universe.

Before confusion took over Vegeta's face. "Why would you only cleanse half a race? Was he using the other half for slavery?" It's what Cold or Freeza would do.