Terminology question

What do you call the kind of JS-heavy application that is built with Meteor? I’m trying to explain the difference between a single-page app, like you would build with Meteor or Ember, vs the more traditional server-rendered app that you would create with Flask or RoR. However, I’m not sure the term ‘single page app’ is correct, because a Meteor app could have multiple entry points - that is, within a single Meteor instance you could still have multiple top-level urls each with their own separate HTML page.